Some vague ideas for GT5...

[Spidermate]

Well, I was joking all right

Still, I don't think "Digimask" or some similar technology would be accurate enough for modelling your car.
It hardly can make a recognisable face in games it is used currently, and I don't think the technology would advance so much for next gen (which is not that far away).

They are not modeling your car. I don't see where you're getting that from. The skin of your car taken from the 2D picture will be stretched over a model taken from within the game. Image recognition should have made this clear. Through this approach, this custom car will not look completely identical to your car, but it will look enough like your car.

 

[Farid]

What I read in that quote is talking about using EyeToy for texturing your custom vehicles, not modelling them.

Yep, and i'm not even sure you could do such a thing as texture the whole vehicule (It would look like crap), maybe you'll be able to create logos or something.
BTW, since sony already licensed Digimask technology, and seeing that GT5 will surely be online, maybe you'll be able to map a texture of your head on a driver?