Enter the following as your name:

CARTOON     All the cars
TRACTION    All tracks
YOY         Weapon cycle - press L/R to cycle
YUEFO       Unlock UFO
FLYBOY      Hi-Fi mode
MAGGOT      Tiny mode
GOATY       Edit progess tables
CHANCER     Switch cars 

Invert Track:

At track selection screen press Right + Left + Down to invert the track different

ways!!

Thanks to Revolution reader Jonathon Trousdell!