the CLK-GTR should be sponsored by warstiener, which is a beer. I believe the actual car that is modeled after was. I know there were CLK-GTR's just like it that were.
On the Toyota Minolta, right behind the front wheel it looks like there is a small "West" decal. I am not sure, nor have i looked closely; so, i could be wrong. But if it is a west logo and the same company that sponsored McLaren's f1 cars in the past, it is a alcohol/tobacco company(i don't know which. I just know they substitute that sponsor on the F1 cars when going to countries where they cannot have such sponsors).