Alternate views
Select time attack mode, choose any track, and enter CAM as a name. Hold L1 + L2 + R1+ R2 and press X at the "OK" prompt to confirm the name. Exit the track and press L1 to access three new views.
Get power-up when you enter a gate
Enter exploration mode and complete three laps. Then, enter POW as a name. Hold L1 + L2 + R1+ R2 and press X at the "OK" prompt to confirm the name.