Enter these following codes as your name:

CMGARAGE - Extra vehicles found in garage next to Renault Laguna. Tank (use horn to fire weapon) and Flexmobile

XBOOSTME - Speeds the game up.

CMCOPTER - Helicopter view (One Player Mode Only).

CMSTARS - Evening sky.

CMFOLLOW TV - Camera View (One Player Mode Only).

CMLOGRAV - Low Gravity.

CMTOON - Cartoon sky.

CMRAINUP - Rain falls up the screen.

CMNOHITS - Drive through other cars.

CMMICRO - Top-down racing view.

CMCHUN - Go-Kart View.

CMDISCO - Fog. [I think you 3Dfx for this to work]

CMMAYHEM - Makes other cars drive like maniacs!

CMHANDY - Larger hands on in-car view

CMCATDOG - Raining Cats and Dogs