ok, here's how you do it: on memester's hill, at the top, there is a shy guy climbing his way to the top. on the third lap, clip through the sidebars, and run over the shy guy. you should automatically lose the race. now, go to the online chat and say "get rickrolled". repeat this process two more times. now, get hit by three blue shells in the third lap of any course in one race, and after so, once the race is finished, you should have unlocked both the car and the character.