Ai for all cars.
when I bought the game there a year ago , all the AI cars remained on the roof.
for me the AI cars that are on the roof , stay on the roof.
Warning, I speak for the parties solo not multiplayer
he is not difficult to put option on the roof : on / off , for the 23 cars ( artificial intelligence ) for the solo race , not multiplayers
I am not strong in English , I hope you understand