Indianapolis Motor Speedway has played an important role in both Marcus and Hampus Ericsson’s careers, but the 2026 DESDER Indianapolis 8 Hour gives the brothers an opportunity they have never previously experienced: sharing the same race car.
Marcus has joined younger brother Hampus and full-season teammate Derek DeBoer in the #99 Random Vandals Racing BMW M4 GT3 EVO for the GT World Challenge America and Intercontinental GT Challenge season finale. His addition was confirmed ahead of the Indianapolis weekend, bringing the 2022 Indianapolis 500 winner back to the Brickyard in an entirely different form of machinery.
For Hampus, the race concludes his first full GTWC America campaign and represents another step in his development as a GT driver. For Marcus, it offers a chance to challenge himself outside IndyCar while racing alongside the younger brother whose career he has helped guide. Together with DeBoer, they form one of the most eye-catching combinations on the Indianapolis grid.
Hampus reflects on challenging first GTWC America season
Hampus arrived at Indianapolis following a season focused heavily on adaptation. He and DeBoer have spent 2026 learning the BMW M4 GT3 EVO, working within a new team environment and gradually developing Random Vandals’ full-season Pro-Am programme.
“It’s been amazing,” Hampus said of his first season with the team. “I think this year has been the biggest challenge, but also the best experience I’ve ever had, both in terms of growing as a person, but also as a driver.”
The results have not always reflected the progress made behind the scenes, something Hampus readily acknowledges. However, the season has given him a foundation from which to approach the longest and most significant race on the GTWC America calendar.
“We haven’t had the results we aimed for, but that’s racing sometimes,” he explained. “I think we have good momentum coming to the finale here in Indy for the 8 Hour, especially with the guest driver. So hopefully our luck will turn this weekend.”
That optimism has been supported by the #99’s early Indianapolis pace. Hampus put Random Vandals second overall during the opening Test 1 session, while the BMW later returned to the leading group with fourth place during Free Practice.
Indianapolis reunion planned from beginning of season
Marcus’ appearance was not a late addition to the programme. The brothers began discussing the possibility almost immediately after Hampus and DeBoer started their full-season campaign at Sonoma, knowing they would require a third driver for the eight-hour finale.
The combination quickly made sense. Marcus lives in Indianapolis, possesses immense experience around the Speedway and owns the most prestigious victory possible at the venue after winning the 2022 Indianapolis 500.
“I would say we started discussing it right off the get-go at Sonoma,” Hampus said. “We always knew we needed a third driver for Indy, and Marcus lives here, he’s raced here, he’s won here. It just made sense.”
There was also a more personal reason for making the programme happen. Hampus has worked to establish his own identity within motorsport, but his older brother has remained an important source of advice and support throughout that journey.
“I’m very, very excited to have him in the car,” Hampus added. “We’ll see where he’s at in GT3, but I’m sure he’ll be fast, so we’re in good hands.”
Brothers face shared learning process
Marcus may bring extensive Indianapolis experience, but the BMW M4 GT3 EVO presents a very different challenge from the IndyCar machinery with which he is most familiar. Hampus and DeBoer are themselves still developing their understanding of the car, meaning the weekend requires all three drivers to contribute to the learning process.
“Derek and I are still new to this car and to this team,” Hampus explained. “I think the key will be for all three of us to help each other and then just try to maximize everything we can get from each other. I’ve tried to explain as much as I can about the BMW to Marcus, but again, I’m still learning as well.”
The importance of team support
The support available from Random Vandals and BMW therefore becomes particularly important as Marcus adapts. While he has sampled GT3 machinery previously, competing in the BMW over an eight-hour race introduces new demands ranging from braking references and vehicle behaviour to driver changes, traffic management and endurance strategy.
“We’re really looking forward to getting all the help we can from both BMW and the engineers, but also from the driver coaches of the Random Vandals team,” Hampus continued. “We’re in good hands, so I’m very confident for the weekend.”
Hampus also arrives with fresh experience at Indianapolis after competing at the circuit only weeks earlier. Although that appearance came in different machinery, it allowed him to refresh his understanding of a road course that can be difficult to master.
“I think I’ll start at a little bit of a head start from where I should have been without the race that I did a few weeks ago,” he said. “Also, looking at last year here in the eight hour, the BMW package was really strong, so now it’s just about the drivers squeezing everything out of it.”
Marcus returns to the site of his greatest victory
For Marcus, Indianapolis will always carry additional significance. His 2022 Indianapolis 500 victory placed him among the select group of drivers to have conquered one of motorsport’s most prestigious events, and four years later he returns with another opportunity to create a lasting family memory.
“I’m very excited,” Marcus said. “It’s always special to drive here at IMS, and obviously for me, having won here in the 500, it’s always even more special if that’s possible. To be here this weekend racing at Indianapolis together and sharing a car is going to be super special.”
His involvement also provides a chance to experience Hampus’ racing environment from inside the cockpit. Marcus has followed his younger brother’s progress closely throughout 2026, attending the GT World Challenge America round at Circuit of The Americas and keeping track of the #99 throughout the season.
“I’ve been helping Hampus throughout his career and trying to open doors with my connections, so to be doing this together and sharing a car is going to be a good challenge.”
Familiar circuit, unfamiliar references
Few drivers on the grid know Indianapolis better than Marcus, but that familiarity does not necessarily translate directly into GT3 racing. The braking points, speeds and lines he knows from IndyCar will need significant adjustment when driving the heavier BMW.
“I’ve driven this track like a million times,” he joked. “But I’m going to have to reset some of those references that I have from an IndyCar to a GT car around here.”
Rather than viewing that process negatively, Marcus sees it as part of the attraction. Racing outside his primary discipline provides an opportunity to develop different skills and removes some of the familiarity that comes with spending years in the same category.
“I really enjoy those challenges where you have to reprogram yourself and learn something new. That’s one of the reasons why I want to do different kinds of racing and put myself in positions where I’m not super comfortable.”
Ericsson and Palou bring IndyCar interest to GT3 finale
Marcus is not the only Indianapolis 500 winner moving into unfamiliar GT3 surroundings this weekend. Five-time IndyCar champion and 2025 Indianapolis 500 winner Álex Palou joins Lin Hodenius and Luca Stolz in the #80 Mercedes-AMG Team Lone Star Racing entry, creating another notable storyline within the final Indianapolis 8 Hour at the Speedway.
The former Chip Ganassi Racing teammates compete in different classes and with different manufacturers, limiting direct comparisons, but Marcus admitted that some friendly rivalry has already emerged.
“Me and Alex, we were teammates back at Chip Ganassi Racing,” Marcus said. “He’s a good friend of mine, and obviously an amazing driver as he’s shown in IndyCar and other things as well. It will be fun to be out on track with him.”
Palou’s presence alongside Ericsson adds another connection between the IndyCar paddock and an Indianapolis 8 Hour field already filled with factory drivers and major endurance racing names.
Another chance to kiss the bricks
For Hampus, racing alongside Marcus adds another layer to what he already regards as the biggest event of his career. He was at Indianapolis when his brother won the 500 in 2022 and now has the opportunity to chase his own landmark result at the same venue.
“It’ll be my biggest, coolest race of my career,” Hampus said. “I’m grateful for the team, for BMW, and to GT World Challenge America and Intercontinental GT Challenge. It’s going to be amazing.”
Marcus also makes no attempt to hide the ultimate ambition. While the weekend offers an opportunity to enjoy racing with his brother, he remains a competitor once the helmet goes on.
“A dream come true, for sure,” he said when asked what another Indianapolis victory would mean. “We’re here to have fun and have a good weekend, but of course, always when you put the helmet on, you want to perform, and the ultimate goal is to win.”
“We just have to be there in the fight and then execute well. The dream is to kiss the bricks on Saturday night.”
Indianapolis could open door to more GT racing for Marcus
The weekend could also become more than a one-off GT appearance for Marcus. Having followed Hampus’ GTWC America campaign and taken an interest in the championship’s European counterpart, the IndyCar race winner has developed an appreciation for GT racing.
“It seems like a great global championship,” Marcus said. “Really good, fantastic racing really. I’m definitely excited to be here for myself, but also for my brother, to race in this series. It’s been very good for him. I would definitely be keen to do more of these races.”
Any future plans can wait. For now, Random Vandals enters Saturday with DeBoer and the Ericsson brothers sharing the #99 BMW against one of the strongest GT fields assembled in North America this season.
Indianapolis has already given Marcus the defining victory of his career and provided Hampus with several important experiences of his own. This time, rather than pursuing separate objectives around the same famous circuit, the brothers have the opportunity to create another Indianapolis memory together.
