Jack Aitken and Kevin Estre collide on final lap at Road America

During the Motul SportsCar Endurance Grand Prix at Road America, a high‑speed contact occurred between Kevin Estre’s Porsche 963 (car #6) and Jack Aitken’s Cadillac V‑Series R (car #31) on the first turn of the final restart, with just over ten minutes remaining. Both cars were sent into the barriers, ending their races under a full‑course yellow and leaving the official results provisional while IMSA conducts a detailed investigation.

Filipe Albuquerque, driving a Cadillac for Wayne Taylor Racing, went on to win the event. The incident reshaped the podium, moving Laurin Heinrich into second place after a penalty to an Aston Martin entry. Aitken’s championship lead was reduced to 108 points with two races left in the season. In post‑race comments, Estre said “there is no absolute blame on anyone,” while Aitken criticized the aggressiveness of rival drivers.

The collision has sparked debate over racing conduct and will influence the remaining championship battles.