A fun low-budget multi-player arcade racing game similar to Mario Kart.
Surprisingly, it features many game modes, which not always involve racing per se. The controls are arcade-ish and the power-ups are always fun to use against your peers: "EAT DA LOVE BOTS FOOLS!! MWAHAHA<3" (there's an achievement for this). Customizing your vehicle and avatar is enjoyable as well - just take a look at what people posted on the steam hub!
Unfortunately, they never added new content and the game is no longer supported by the developers. Although the game is moddable, it never really got any attention from the modscene.
Buy the 4-pack (during winter/summer sale, it usually goes for US$4) to play with your friends since most public servers are deserted nowadays.