Vanthoor explained that the contact triggered the second caution of the race and that he was given a drive‑through penalty for incident responsibility. The penalty dropped the #24 BMW back to ninth in the final standings, a move the driver said he could not comprehend. esporist.com
Vanthoor Blasts Penalty After Detroit Collision

BMW factory driver Dries Vanthoor slammed the penalty handed to the #24 WRT BMW after a collision with his brother Laurens in the Detroit IMSA race, saying he did not understand the ruling.
