From ign.com
Polyphony Digital is hard at work on a simplified, training version of Gran Turismo that will be used to teach first-time drivers how to drive, according to online gaming site Games Are Fun. What exactly "simplified" means is unclear, but since the game will be used with beginner drivers, expect very little in the ways of customization, and more emphasis on driving physics and environment interaction.
The game is being worked on in conjunction with automobile maker Volkswagen, and will utilize the still-in-development Gran Tursimo 4 engine. The still untitled game will not be for sale in retail stores, so unless you plan on getting another driver's license, chances of playing the game may be slim.