A new-look Meyer Shank Racing team is back at the Rolex 24 after a one-year hiatus and it is just one of dozens of changes as IMSA heads into the most prestigious endurance race in North America.

Scott Dixon won a record fourth Detroit Grand Prix, outlasting the competition in a caution-filled race on Sunday to become the first IndyCar driver with two victories this season.

Marcus Ericsson, the 2022 Indianapolis 500 champion and 2023 runner-up, was knocked out of Sunday's race before completing a lap as part of a three-car crash.

Roger Penske snapped a 54-year losing streak at the Rolex 24 at Daytona when Felipe Nasr held off two-time defending race winner Tom Blomqvist in the final 45 minutes of the most prestigious endurance race in the United States.

Four-time Indianapolis 500 winner Helio Castroneves will continue to chase a record-breaking fifth win as a minority owner with Meyer Shank Racing.

Acura dominated the debut of hybrid engines in North American sports car racing with a 1-2 finish Sunday at the Rolex 24 at Daytona.