The rx-7(fully cusomized) you win can unlock the lambirgini(the first canyon duel it also takes a very good drive)but youll have to finish supping it up the best way to beat the exotic boss is with a muscle car I beat him with a stock camaro ss(i started out with exotic)

Unlock 1 or both of the lamborginis then switch crew members to the grl with the ford gt and go buy one of them then later a better car will be un locked (if you still have her as active)it costs 216,00 or so

The best car to start off with is an exotic. I have prof to share. I was racing in a circet and after the third turn I was going 150 mph.

The best car to start with is the Nissan 240sx. In order to do this you must start career (it helps if you have a need for speed underground 2 file), then when you pick your car pick the cheapest one (rx8) after the “training” exit career and beat the challenge series event that unlocks the 240sx. Then resume career and go buy the 240sx from the car lot. (You can also sell your other car for more money).

These will only work for the camero/muscle cars >BUT< if they work for the rx-8 /tuner or the exotic you won't have to spend all that time thinking about which one to pick

Angie you pick eather the 2nd is the slip of a get out of jail card but if it's not pick the 4th one

Wolf I know is the 2nd one and the same with the other guy to the right of him

And I'm not sure about the last guy because I haven't beet the game yet

You have to go to the xbox live marketplace and enter the code and then follow the on screen instructions: D8TY-26VGX-BC69T-2HV86-JPC7G I hope you all like the cars
Ps you have to have xbox live