Go inside the school or the Kwik-e-mart and go up to the shirt (with the $ sign above it) and press the Y button then you can buy different cloths such as Homer in his under wear or in a dress.
At the main menu (the livingroom), go to the options screen. Hold down L+R, then press B, B, B, A to activate the cheat. A horn will confirm entry.

On level 1 go to a house with a red gate & a big bush there will be a rocket car!

At the main menu (the livingroom), go to the options screen. Hold down L+R, then press X, X, X, X to activate the cheat. A horn will confirm entry.

Whenever possible, drive through crates and phone booths rather than kicking them, as you won't have to waste time running around and picking up your loot.

When your on the third level with Lisa go to the boat by the casino go off the ramp and around the boat toward the Springfield's Hollywood. On your right you'll see a krusty glass break and go on the ramp once you get on the boat drive to the right and you'll see a box connected to a crane go pass it and the take a left get out of the car and go up the stacked boxes. Once you get up those youl well have to jump onto a bigger box go around it and there will be an opening on the box inside is a really fast car. Getting a blown up car by the bowlarma with lisa go into an alley way put a car you should get from someone driving put it under the thing that stops you from going and then goes back up it will it a couple of times and then it will blow up go by and press y if it tells you to if it doesn't you did it wrong. The car goes really slow because it blew up.
Ok to get the boat car, you have to play the squidport level with Lisa. During one mission u find Bart on a boat. After u talk to him jump up onto the ledge and explore the deck of the boat. Along with finding a collector card, u should also find a boat car across from the collector card.

Now to find the Monorail car, u have to play the downtown level with Marge. During one of the missions, you'll come to a broken monorail track on a small street. go up the stairs to the monorail and jump onto it and jump in the first car. Then u can drive the Monorail car!! There will also be a collector card there too.

To Get The Bonus Game You Need To Get All Of The Collector Cards In At Least 1 Level. NOTE: This will let you play 1-3 player games and races.

If you want to do this first you have to get out of the car you're already in, then go up to a car that's driving in the street or get on top of it and wait till you see the y button icon at the top of the screen and press the y button there, now you're driving in someone else's car!

To find the chess board, you must go UP the ramp to homers workstation in the power plant but don't go out. In the room you are in just before the parking lot, stop. While looking towards the parking lot, look to the left. you will see a thing with wooden boards above it. jump on the mechanism, and then jump up and kick the boards. go down the corridor, and you will see the giant chess board. you can go up the stairs and you will find two buzz cola coin boxes. also if you kick the chess pieces, you get a coin.

First go to the 3rd level and go to the huge boat in the harbor(c-spanker).Then go around and you should see a house, (Davey Jones Hamper). On the left are 2 crates on top of each other. Jump on the chain rail and then jump behind the crates. Walk in to the wall and your in the glitch house.
How to get Bart and the second level (Downtown) Do all of Homer's missions and it will take you to Downtown with Bart as the character

There are several ways to get cars first of all you will be required for each level to buy 1 that is the easiest.You can buy them from Gill who will be marked with a $ sign on map.One person somewhere on the map will have an ! over there head do a mission for them and u will get a car.Also buy doing the 3 races presented in the levels you will get a car from Patty and Selma.
If you jump on top of any car then it will drive you around the city. Just jump on top of a car that stops.

Drive all around and find the flying bee cameras. When you find one go to it jump and hit and a large amount of cash well come up.

Take a car that is not your own and keep smashing it into a object that can't be moved. The car should blow up pretty easily emitting a large amount of coins!

Drive through Booths and crates instead of kicking them to get coins faster

When you are playing as Bart (level 2) you must go to see Frink by the stadium. Near there (cant remember exactly where) is a monster truck sitting on top of a ledge of some kind. Jump up on the ledge and press Y to drive the Monster Truck!

In the 4th level go to the trailer park. On the side of one of the trailers is a quad. Press the Y button to ride it.

In the first level of this game you can find a rocket car. Find the power plant and take the tunnel all the way through. When you arrive out you will see large mansions. Go straight out, turn right, then left and immediately to your left will be a gold house. walk up to the front gate and you will see a rocket car from that old episode... you know that one. Get inside with y. Keep in mind that this car is extremely fast and not so durable so be careful!

1st LEVEL - Rocket Car outside (close to) Mr.Burn's Mansion.
2nd LEVEL - Monorail - The First Car of the Broken Monorail System.
3rd LEVEL - Boat - on the big cruise liner inside the green box.
4th LEVEL - 4 WHEELER - On the left of one of the trailers in the trailer park.
5th LEVEL - Atthe stadium jump from the fountain up to the Monster Truck.
7th LEVEL - NEXT TO THE BIG ACCIDENT ATOP THE KRUSTY BURGER IS A RC CAR

To skip a mission,you have to fail a mission 5 times and then in the menu you will have the option to "skip" sometimes you will have to fail a mission 6 times. It's common sense if you have played Road Rage, in the Missions fail it 5 times and you skip it, same as here!

Go to the Halloween level aka level 7.Now walk out in to the middle of the street.And wait till a car stops in front of you.And when it says press (y) to enter. Don't do it.Instead, press (a) and jump on the back of the car that stopped by you.It works best with the ghost boat because, there is a lot of room on it.Once your on the car, don't press anything.And after a few seconds, the car you are on will begin to move and homer will act like hes surfing.(The car will take you all over the level)

In the options menu hold L+R and enter the following:

X, X, X, Y - Press horn to do a huge leap in your car
B, B, B, A - More camera angles
B, A, B, Y - Grid mode
A, B, A, B - All reward Cars
A, X, X, Y- Credits
Y, Y, B, X - Speedometer display
B, B, Y, X - Red Brick Car
Y, B, Y, B- Tripping mode
A, A, A, A - Night time mode