Need for Speed ProStreet Passwords (Xbox 360)

The game features an online mode. However, unlike previous Need for Speed titles, it is much more integrated into the game; as long as a player is connected to the Internet and logged in, his/her in-game progress is recorded for the purpose of online leaderboards. A player's custom-built cars can also be shared online via "blueprints", with the creator being given credit whenever their car setup is used for a leaderboard. Online modes are not available in the PlayStation 2 and Wii versions of the game. The official title was leaked several months before the official announcement. Soft Club, the Russian distributor of the game, unveiled the name and release date of the game in February 2007. EA had not until the official announcement on May 31, 2007, given any clue about the game's title.

There are over 60 cars from around 26 manufactures included in ProStreet. Only eight of these are supercars, making them relatively rare, as in real life. The game also features the new Nissan GT-R R35. There are also a number of unfinished cars that can be obtained through hex-editing, which include the popular import, Honda S2000, the all conquering Bugatti Veyron, and the classic Lancia Delta Integrale Evoluzione. Ironically, none of the cars are built as pro street cars or are associated with them. (Wikipedia)

Passwords

Freebies
In career mode under the options menu there is a spot for cheats to be typed in

SAFETYNET - for repair markers

reggame - $10000 bonus and unlock cars, including Camaro concept, Mustang GT500 and R34 Skyline

1ma9x99 - $2000 bonus

w2iollo1 - $4000 bonus

L1is97a1 - $8000 bonus

ZEROZEROZERO - Coke Zero Golf GTI

HORSEPOWER - for engine upgrade

leipzig - unknown unlock

collectorsed - unlock Acura Integra, Acura NSX, Audi RS4, Lexus IS350 and Solstice GXP in collectors edition

UNLOCKALLTHINGS - unlock all bonuses

itsaboutyou - Unlock Audi TT Quattro

castrolsyntec - unlock Castrol Syntec vinyl

energizerlithium - unlock energizer lithium viper & vinyl

worldslongestlasting - unlock k&n vinyl

mitsubishigofar - unlock Lancer Evolution

CASHMONEY - you get $10,000

Some fine Xbox 360 demo gameplay footage: