To be honest, the amount of time they've had to develop GT5, i won't be surprised if it IS true. If it is however, that's going to be amazing. If not, i could understand. For a simulation racer, the physics could get wierd if given the ablitly to make your own tracks.
Follow Me: twitter.com/alkamiststar
Watch Me: youtube.com/alkamiststar
Play Along: XBL & SEN : AlkamistStar