This one is really cool! Nice arcade gameplay and 3D graphics. There are quite a lot tracks. Downloaded it today on my Xperia X10 and played all day. The game has score server
free: https://market.android.com/details?id=baltorogames.formularacingfree&feature=search_result
cheap: https://market.android.com/details?id=baltorogames.formularacing&feature=search_result
free: https://market.android.com/details?id=baltorogames.formularacingfree&feature=search_result
cheap: https://market.android.com/details?id=baltorogames.formularacing&feature=search_result