Not street racing, or F1, or NASCAR, or rally. Perhaps what you dont want is a racing game?
.Racer is a free cross-platform car simulation project (for non-commercial use), using professional car physics to achieve a realistic feeling and an excellent render engine for graphical realism. Cars, tracks and such can be created relatively easy (compared to other, more closed, driving simulations). The 3D, physics and other file formats are documented. Editors and support programs are also available to get a very customizable and expandable simulator. OpenGL is used for rendering
How?downloading xtra cars and tracks now
Well what the fuck is Test Drive Unlimited then? It doesn't fit into any of the above. Basically what I want is to drive 911s, aston martins etc. around a track, with some nice eye candy. I don't want The Fast and the Stupid or flinging some dingy ford escort around a forest.