510_SSS said:
I don't mean to get technical but these are not prototypes, they do not exist physically. They are renderings. What studio does he work out of? I don't do much work with GM but I am pretty sure they wouldn't make a G8 with a Mazda 6 rear. I don't think the chief designers would be happy to receive renderings that are so obviously unoriginal.
Look I'm not a car buff all I know is they are futuristic models that have been created from the perspective of 'how might they look in the future'?
Errr I didn't say they were being created for GM

It's a car fan website who indulges in all sorts of speculation - or did that small fact pass you by?