Lvl 1 rocket car:outside the gold house. Lvl 2 monorail:up the stairs blocked by police tape. Lvl 3 boat:on the boat in the squidport in a crate. Lvl 4 mini quad bike behind a caravan in the caravan park. Lvl 5 monster truck:on the fountain next to the stadium Lvl 6 pink caddylic: hole in the wall next to planet hype Lvl 7 mini rc:on top of krusty burger near the kwik-e-mart
First go to options then hold L+R and press YAYA and if you did it right there should be a car honk then hold L+R again and press YYXX.
And again if you did it right then it should make a car honk it is kind of soft so you might want to turn down the music by pressing sound in the option menu.
Then resume your game and now when ever you run into a car it explodes!(also blows up cop cars) then do all the races where you have to come in first and run into the cars then you can go as slow as you want in the race because the cars are now blown up!
On the episode where we find the itchy and scrathy idea was stolen by a man who is now a bum, he sues them and gets a solid gold house and a rocket car.
With homer at the begginig, if you go over the bride with the gap, and keep going, you will find the house... and the rocket car. It is really fast if impossible to control. It is great for stunts, trust me!!!