The fastest car is the Ford GT. Don't upgrade it too much because I did it and it goes TOO fast!
One way to win easy money, is first go to the
battle factory or whatever its name is. Then just
keep doing any of the 2 drag races in the race
day and before you know it you will have a ton of
Easy Drag Races
When you start out a drag race just shift into
shift 2 and hit the NOS button. Keep the NOS
button held down and keep shifting until you win
the race. You can use this hint to beat the drag
race king. That's how I Beat the drag race king.