Indy car, white, blue with a red mark on the roof, rounding a turn, in front of the white car.
A driver passing his opponent on the last lap
The driver possibly has not opponent.
One car in front of another is not enough information to deduce that some one is passing another. Two cars on a racetrack do not constitute they drivers being opponents.
The driver may or may not be on the last lap and no indication he has passed, maybe has been in front the whole time.