Really? Yeah, they were only given with certain Pizza Hut orders for around a month, sometime in 1998 or '99. It also contains alot of hidden evidence of things that were supposed to be in the final GT2, including things hinting that SSR11 was supposed to be in the game, as Xenn found in his awesome "Searching for Evidence of Hidden Things" thread!
Definitely, It's so cool! Just watch this:
The suspension model has more roll in that demo than GT6! I'm pretty sure GT regressed after GT2 in tje quest for shiny graphics and is only just catching up with its predecessor. .