IGN interview reveals that the "Driver Persona also indicates the level of assist that you will receive from the game; this is called Driver Intuition."
Intuition, an optional assist feature, will show you the best line to take in each course. Racing enthusiasts know that this information is crucial for winning a race. Handheld owners can rejoice in having this very helpful feature. Finally, people will be glad to hear that EA is continuing their Infrastructure efforts on PSP through this latest title.