Interstate 76: Nitro Pack Codes -

Fly UFO:
Enter thetruthishere as a variant name and select the Phaedra Rattler.

Fly helicopter:
Enter retpocileh as a variant name and select the Phaedra Rattler.

Drive tank:
Enter knat as a variant name and select the Phaedra Rattler.

Mission skip:
Begin game play in trip mode. Hold [Ctrl] + [Shift] and type getdown. Taurus will say "get down" to confirm correct code entry. All cars will attack. The current mission will be flagged as completed after you are destroyed.

Self-destruct:
Press [Ctrl] + [Alt] + X during game play.