Electronic Arts Inc. today announced that a demo for the Xbox 360 version of Need for Speed: ProStreet has been released via Xbox Live. The demo features two distinct exciting racing modes: Grip and the all-new Speed Challenge. On October 24th, the 2009 Nissan GT-R will be unlocked, giving gamers worldwide access to this legendary car for the very first time. The PC demo will be available in early November and the PS3 one in mid-November. Need for Speed: ProStreet will hit the store shelves on November 14th, for Xbox 360, PS3, PC, Wii, PS2, DS, PSP and mobile.