nr2003 is an extremely fun (even though i do not really like nascar) game to play, and it is realistic. it has many many tracks and not just ovals. it is only available for pc i think, but not sure, you can check for a demo for download, but good luck.
hard truck 2 is arcade-ish, but it feels pretty realistic to me
it has 18-wheelers and box trucks and a few made up trucks and you deliver roads with cops, time, opponents, and damage as obstacles. it is an extremely fun game, look up reviews if you get a chance
hard-truck 2 is available off amazon for about 2 bucks with about a weeks shipping, so it is a cheap fun play