All, this might be worth mentioning again:
There is very little chance of any major car manufacturers giving the devs licence to add their cars to our sim. It's just about certain that if they did, the cost of the game would increase rather quickly to cover royalties. Some smaller racing team/low quantity makers may be easier to get on board though.
SO: Rather than asking for specific cars, ask for a car with a feature and/or look.
So, something that resembles a classic V8 muscle car, that's well within the relm of possibility, but sadly, my old fave, the 67' Plymouth Fury isn't really an option. At the other side of the motoring community, my all time favorite, the Mazda RX-8 is even less likely to make it, as it's still in production. It's a shame, but that's the way it is.
Peter