Interstate 76 Codes -

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.

Screen shake:
Hold [Ctrl] + [Shift] and type wiggleburger.

Larger radar perimeter:
Hold [Ctrl] + [Shift] and type thirdnostril.

Poem from Taurus:
Hold [Ctrl] + [Shift] and type freelance. Alternately, just press C.

Suicide:
Press [Ctrl] + [Alt] + X to destroy your vehicle.

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

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

Safe falls:
Quickly press [F12][F12] when your car is about to hit the ground to flip screen resolutions. Your car will survive the otherwise fatal impact.

Fly helicopter over last level:
Click on the helicopter in the top left corner of the vehicle selection screen for the last level.
View development team:
Look in back when driving the school bus.