So I stumbled across a free game called "Rigs of Rods" that is pretty darn fun. Rigs of Rods
Once you download some extra vehicles (Specifically the rock crawlers... the competition rock crawler is a blast) and a couple extra tracks, it gets really easy to waste time with
It takes a bit to get used to it, especially if you are playing on a keyboard and mouse, but it is really fun when you get used to crawling the rock courses. And hey, for free you can't go wrong!