Secret cars
In the Homer level go to mayor Quimby's Manshion and you'll see a "Rocket Car" Notice the quotes! In Apu's there is a "Monster Truck".
I am still searching for Marge's secret Car and Barts and Lisa's.
GOOD LUCK SIMPSON'S FANS!!
More tricks, tips and cheats for this game are right here - The Simpsons: Hit & Run cheats
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