probably not very realistic.. my advice if you want winter racing fun, lol, fork up the $200ish dollars and buy the xbox 360 and FORZA MOTORSPORT 3!! wow thats a realistic game with 400+ cars, and soo many porsches,
check out this thread.
http://forums.pelicanparts.com/off-topic-discussions/507950-want-forza-3-a.html