racing open-wheel cars on them but after both driving the cars and watching teammate Tony Kanaan run on ovals, he ultimately agreed to run an oval test at Texas to prep himself for the Indianapolis 500. Throughout the year Johnson largely struggled in IndyCar, frequently running at the back of the field and struggling with spins and accidents. On December 15, 2021, Johnson announced that he would contest the full 2022 IndyCar schedule driving the No. 48 car for Chip Ganassi Racing. During his first oval race in the series, the XPEL 375 at Texas, Johnson finished a then career-best sixth. Johnson made his Indianapolis 500 debut later in the year. Johnson led two laps and, despite a late race crash, was elected Rookie of the Year for the race. Johnson proceeded to collect his first career IndyCar top 5 in his first ever trip to Iowa Speedway at the Hy-Vee Salute to Farmers 300 presented by Google on July 24, 2022. On September 26, 2022, Johnson announced that he would be stepping back from racing full-time. Other racing Johnson first raced in the Race of Champions in Europe in 2002. He was eliminated in the first runoff by then world rally champion Marcus Grönholm of Finland but he and Jeff Gordon and Colin Edwards racing as Team USA won the teams' championship. He returned to the event two years later but lost the quarter finals 0–2 to Mattias Ekström of Sweden who was DTM German Touring Car champion that year. Johnson entered the 2006 Race of Champions but did not start due to injury received just days before the race. He still attended the event to cheer for teammate Travis Pastrana. In the 2007 event, Johnson was eliminated before the quarter-finals by Formula One driver Sébastien Bourdais of France. In 2004, he started racing in Grand-Am with the 24 Hours of Daytona, where he finished eighth. He also entered the event one year later, which his team, Howard-Boss Motorsports, finished second. Two years later, he entered two events, which were both held at Daytona International Speedway. During the races, his team finished 9th and 19th. In 2008, Johnson moved to Bob Stallings Racing with Alex Gurney and Jon Fogarty to race in the 2008 Rolex 24 at Daytona, where the team finished second. One year later, he returned with GAINSCO/Bob Stallings Racing for his fifth Rolex 24 appearance. During