There's a mod that brings back some "controversial" liveries made by BugBear.

Also this is not the first livery they scrapped from the game.

Just because they put confederate flag on hood doesn't mean the car is Grinder from FlatOut UC...

I feel like this is more about controversy than copyright.

then thats why, they dont own flatout so they cant just copy it outright, otherwise they would get sued and surely lose