Battle Race Madness Zero

This is a game that I made as a prequel to Battle Race Madness. Initially, I intend to have that game uploaded around May where I can do this without breaking a contest's rule, but considering that I need to make something small as an introductory entry, I decided to make this game. Any feedbacks to improve my battle race game idea is welcomed! The game is compressed as a .zip file and needs to be extracted first.