HSX Hypersonic Xtreme - All cars

All tracks:
Hold L1 R1 and press Square3, X, Triangle2, Square, X at the main menu.

All track editor features:
Win all the Arcade Circuit and Slalom Series races in either first, second, or third place.

Building Shop:
At the main menu hold R1L1 and press X, X, X, Triangle, Triangle, Triangle, Square, Square, Square, Circle, Circle, Circle, X, X, X.