Hint: Bounty Increase
You can raise your bounty as much as you want and complete that part of your milestones. First get in a pursuit and then find a ledge (ex. on top of the buses at the bus station) go as closes to the end of the buses away from the up ramp as possible without falling off and without a cop following you up the ramp. Then sit there and watch the cops go crazy. It's better if your heat is 2 or up as the lower level cops will sometimes lose sight of you and you'll cool off. At higher levels though the police will hover below you ramming into each other and everything else. This destroys their vehicles which in turn raises you bounty and length of your pursuit. You can sit there as long as you like but check behind you periodically just to make sure one of them hasn't gotten smart enough to come up the ramp. The highest I've gotten off one pursuit is almost 6 million bounty.

Hint: Re-Random Pink Slip
After defeating a blacklist rival, you may opt to take the pink slip from them. Since the contents of the pink slip is randomized, you should make an effort to save the game before racing a rival -- reload the game and restart the race if you get something you do not want.

Hint: Roll Over Spike Strips
When approaching an6y roadblock with a heat level greater than four, use the slow-motion effect to avoid spikes strips completely. (Unverified.

Hint: Straight Drivin'
Engaging nitrous oxide shifts the weight of the car and in layman's terms, your car will attempt to straighten out. Combined with speedbreaker, it is possible to take on almost any turn without an appreciable loss of speed.

Unlock All Cars
On the Press Start screen, input iammostwanted