In the Extras menu, there is an option for entering a secret code.
One would assume that this is where promotional unlock codes go, but right above it is a redeem promotion option, so I guess that's not it.
What are those secret codes for, and how do I obtain them?
Best Answer
There's only one secret/cheat code in circulation right now:
"GOTTAGOFAST" turns your "KM/H" into "SANICS" (a play on a Sonic Internet meme). Turn down your volume though.. it's crazy loud!