StuntMania

From Sector3:

A fast paced 3D car stunt driving game, where you get to perform the most amazing tricks and stunts in some really cool environments. You can select any of six stunt cars and play either timed games, challenge games or just goes crazy and has fun. Choose from TEN unique driving environments, including NIGHTTIME driving version of all levels. Each level is filled with stunt and trick ramps, bonuses and hidden challenges

The demo version of StuntMania Pro is called StuntMania and has the following game play limitations: One environment (Trixter park) with daytime and nighttime driving modes; one car (Razor).

Version 2.5.2 adds a new Air Speed Freak challenge game, and new bonus roundup challenge game, a new gravity power up, a new wheelie trick, new bonus tricks, and new visual effects.