One of the projects that I have worked during last year was to produce a Modified Late Racing Car (MRC), which is a specific race series in the USA. The car has been modelled in 3DS Max, from measurements supplied by the client based on there actual car. It was then converted to run inside rFactor with the clients own car physics and racers custom skins.
Have a look at my facebook page for more images and details of other projects that I have worked on. www.facebook.com/MarkShires3d