Best car
The best car is, not surprisingly, the one that sells for $1 million. not surprisingly. When fully upgraded, its acceleration will be around 0-60 in almost 1 second. For a large speed record, go to Paris. After the first two sharp turns, carefully maneuver your car through the slight turns ahead to ultimately gain massive speed (up to 270 mph) before the next sharp turn.

Stay on track
When you are going around a sharp corner at high speeds, you will often go off of the track and lose speed and risk of losing your place in the race. To prevent this, simply let off the gas completely at the middle of the corner until you start to skid. Do not panic. When you start to skid, accelerate again and you should regain control. Straighten yourself out and you can get to your top speed faster than if maintained the same speed throughout the entire turn.

Faster stops and sharper turns
Press [L2] with a car with an automatic transmission for a faster stop or a sharper turn.

$6,000,000
Enter "AKJGQ" as a name.

All cars
Enter "DFGY" as a name.

All tracks
Enter "ERDRTH" or "ERERTH" as a name.

All quick race tracks
Enter "CVCVBM" as a name.

No quick race tracks
Enter "OCVCVBM" as a name.

Shorter tracks
Enter "QTFHYF" as a name.

All challenges
Enter "OPIOP" as a name.

No challenges
Enter "OPOIOP" as a name.

Disable checkpoint times
Enter "FFOEMIT" as a name.

Enable checkpoint times again
Enter "NOEMIT" as a name.

Stop The Bomber mode
Enter "RFGTR" as a name. Alternately, catch all the speeders on the Paris, Rome, New York, Hong Kong and London tracks in cop chase mode.

Car preview
Hold [L1] + [R1] when purchasing a car or selecting one out of your garage to use the D-Pad to move it in any direction.