Looks like EA has put the final nail on the coffin of the phrase "Need For Speed = Street Racing". With the PSP version of NFS about to be released, EA has admitted that ProStreet is a simulator type racing game. Not that that's a bad thing though.
The PSP version is to come with some exclusive features when it arrives in stores on the 18th of February. Those features, currently, are Driver Intuition, Driver Personas, and Speed Mode.

IGN: What are the major differences between the console and PSP versions of Need for Speed ProStreet?

Gregg McGillivray: The PSP version of Need for Speed ProStreet is, at its core, a portable edition of the console version that includes many of the same features, including full Damage Modeling. The major difference is that this version actually has quite a bit of content exclusive to the PSP, such as Driver Intuition, Driver Personas, and Speed Mode.

IGN: How do the Driver Personas work? Are they similar to the difficulty selection that you get at the start of the console games?

McGillivray: In a sense, yes. Choosing a Driver Persona does directly affect the difficulty level of the races in which you'll be partaking. Speed King is for racing veterans, Weekend Warrior is meant for players who are new to sim racers, and Adrenaline Junkie is meant for players who have previously played racing games.

But choosing a Driver Persona also indicates the level of assist that you will receive from the game; this is called Driver Intuition.

StarJet via psp.ign.com »