Crash Nitro Kart

Collect a cup for each track in its world. Now you can play the Sapphire race.

Get all purple tokens in adventure mode.

To unlock Velo, beat Adventure Mode as both Team Bandicoot and Team Cortex.

If you get a boost weapon, keep it. About halfway through the track you will see a corner with a bit missing off the fence. Use the boost weapon and drive through the window. Use this if you want to cut that corner. Also, Aka Aka, Uka Uka, or Emperor Velo will work.