The Simpsons: Hit And Run Codes -

Instant vehicle explosions:
Press and hold + at the options screen and push (x2), (x2). You will hear the sound of a horn if you have entered the code correctly.

Fast cars:
Press and hold + at the options screen and push (x4). You will hear the sound of a horn if you have entered the code correctly.

Very fast cars:
Press and hold + at the options screen and push (x4). You will hear the sound of a horn if you have entered the code correctly.

Every bonus car:
Press and hold + at the options screen and push , , , . You will hear the sound of a horn if you have entered the code correctly. REMEMBER: You must have first completed all missions.

Red brick car:
Press and hold + and push (x2), , at the options menu. X sound will confirm correct code entry. The secret vehicles normally found in each level will now be a small red brick car.

Invincibility:
Press and hold + at the options screen and push , , , . You will hear the sound of a horn if you have entered the code correctly.

Super jumps:
Press and hold + at the options screen and push (x3), . You will hear the sound of a horn if you have entered the code correctly. Sound the horn to jump extra high.

Display speedometer:
Press and hold + at the options screen and push (x2), , . You will hear the sound of a horn if you have entered the code correctly.

Grid view:
Press and hold + at the options screen and push , , , . You will hear the sound of a horn if you have entered the code correctly.

Alternate views:
Press and hold + at the options screen and push (x3), . You will hear the sound of a horn if you have entered the code correctly.

Psychedelic view:
Press and hold + at the options screen and push , , , . You will hear the sound of a horn if you have entered the code correctly.

Alternate credits audio:
Press and hold + at the options screen and push , (x2), . You will hear the sound of a horn if you have entered the code correctly.