A great racing game if your a serous racer, if you aren't, this may not be for you.
*Here's a few cheats/hints you can do to get basically unlimited money that isn't on this site until now (well at least I couldn't find it!):
Step 1: First, Enter ALL the cheat codes available in the cheats section of this page by going to Career on the Main Menu, then to secret codes.
Step 2: After doing that, go back to main menu, go into Race Day briefly, the hit "B" to get back to the main menu (this activates the cheats for some reason)
Step 3: Go to the car lot in career mode, and find the Acura Integra (Not the Type-R version) it should say $0 for the car, buy it.
Step 4: Now this will take you to your garage. Hit "B" and then "Y" to sell the Acura Integra, you should make a profit of $7,200 every time you buy one. you can do this as much as you want.
You can repeat steps 3 & 4 infinitely to get as much cash as you want! (This cheat will only work on the X360, PS3 & PC versions of this game.
The PS2 & Wii version doesn't work because those systems have limited processing power and doesn't have the features (like visual damage) and some cars available in the the other version for X360, PS3 & PC. And it won't work on the DS and PSP since no cheats will work on it and no way of entering any on these handheld systems and the gameplay it totally different as well.)
Also you can use the cheat "unlockallthings" as much as you want to make money, just sell all the cars you get n your garage every time you enter that code. but you must close the game and then reboot it again every time. you can't enter it more then once without doing that. this works on all systems exept for Nintendo DS and Sony PSP versions of this game.