As you know, all the cars use placeholder names at the moment, and I think it would be better if they had actual names once the game is released.
So far, there are a few cars that already have a name that isn't used in the menu. We've got the Detroit Superior ZS (American 1), the Genk Sprint V6 (European 2) and the American 2 is simply called Automobile. So I thought we could post our suggestions for the names.
I think the American 2 could be called Detroit Automobile.
Now every American car in the game is based on a GM car, so they could all be manufactured by Detroit, but that would be a bit boring. The American 2 is more or less a Buick Skylark and Oldsmobile Cutlass fusion. Both cars were assembled in Framingham, MA. It doesn't sound like a good name though. However the Cutlass was also produced in Fremont, CA, and that sounds pretty good, so maybe they could call it Fremont something. Now I don't have any idea for a model name, so I don't know.
The American 4 looks a lot like the American 1 too, so I think it could still be called Detroit something. Maybe Detroit Pheonix, but that's really unimaginative.
The European 1 seems to be based on a Fiat 850. It could be called Turini, since that's where Fiat headquarters are located. I have no idea for a model name, but somebody mentioned Paprika as a nod to the Pepper and Chili from Flatout since those are all small European cars, and that could be pretty funny.
The European 3 seems to be based on the first generations of Ford Escort. The first gen was produced in Genk, and even though the car looks more like a second gen, it could still be called Genk something.
And finally, the Asian 1 is a C10 Skyline. Nissan's HQ are located in Yokohama, so that could be a good manufacturer name. Maybe you could call the car Sunray, as another nod to the Flatout series.
And that's it. As you may have noticed, I like the idea of cities as manufacturer names. Feel free to post your own ideas.