Snake River Canyon level
Enter "LASTSTAGE" as a password:
Grand Finale mode
Enter "LEVELS" as a password.
Only have normal levels
Enter "RESET" as a password.
Glitch: Invisible ramp
After completing the five levels in the Las Vegas level, on the Grand Finale, choose stretch limos as the thing to jump. Set the number of them to the maximum and put your settings to the first three of them very good, and leave the bottom two alone. Take the jump and you will hit an invisible ramp above the real one, making it easy to land and get a lot of money.