TNN Motorsports Hardcore Heat cheats and cheat codes for Dreamcast

Cheat codes:
Go to the mode selection screen and press the following button combination:

Unlock LE-2001 truck:
Press Y, X, Right, Left, Right, Left, Down, Down, Up, Up

Unlock T4 fighter jet:
Press Left, Right, Down, X, X, X, X.

Additional expert races:
Press Left, Left, Right, Right, Left, Right, X, Y, Y, Y, Y, Y, Y, Y, Y
at the mode selection screen.

Random weather in time attack mode:
Press R, X, X, X, X, X, X, X, Y, Y, Y, Y, Y, Y, Y.

More expert races:
Finish the expert mode with Beelzebub Buggy on the
championship difficulty level

LE-2001 truck:
Win 1st place with Coyote in expert mode

T4 fighter jet:
Reach 100% on the level checker when building your car.

Alternate Paint Jobs:
Finish the game once in expert mode

New Race Buggy Beelzebub:
Win on 1st place the Expert season