Drive the Porsche:
Highlight car "F" in the car select menu. Hold L + R + Y and press Right. The "G" car (Porsche) will appear.

Drive the truck:
Highlight car "G" (Porsche) in the car select menu. Hold L + R + Y and press Right. The "H" car (truck) will appear.

Secret rooftop track:
Enter the mode select screen, highlight each option, and press B. The screen will display each mode and flash to confirm correct code entry. Choose the "Time Trial" option. Highlight any track on the course selection menu, hold X and press A. A rooftop track will appear, with the background from the track that was originally highlighted. Press Y during the race for an over-head view.

Replay pause:
Press Z during the replay to pause the sequence.