All challenges:

At the main menu, press Square(2), Triangle, Circle(2), Square, Triangle, Circle to unlock all challenges.

All checkpoints:

At the main menu, press Circle, Square, Triangle, Square, Triangle, Square, Triangle, Square, Circle to unlock all checkpoints.

All destructors:

At the main menu, press Triangle, Square(2), Triangle, Square(2), Triangle, Circle(3) to unlock all destructors.

All free rides and Lamborghini Miura:

At the main menu, press Square, Triangle, Square, Circle(3), Triangle, Circle to unlock all free rides and the Lamborghini Miura.

Cheat mode:

At the main menu, press Triangle(2), Circle, Triangle, Circle, Triangle, Square, Triangle, Square, Triangle to unlock all cheat options. Lamborghini Miura Successfully complete the game to unlock the Lamborghini Miura in free ride mode.