Here are some cheats and tips for the game Grooverider: Slot Car Thunder.
Bedroom car:
Finish first in the Dining Room track two times in the 3V class.
Eagle car:
Finish first in the Dining Room track in the 3V class.
Harrier car:
Finish first in the Dining Room track in the 3V class.
Sprit car:
Finish first in the Dining Room track in the 3V class.