I hope I'm wrong, but there is no Vision Gran Turismo (GT4 spiced up for PS3). This is GT5, this is supposed to be the next generation GT. This is also not due to be released until 2007 as KY stated. Of course this is if all goes according to plan, otherwise it may take longer.
Now, that's 3 years of development time. And by year one this is all they have?
Real time lighting is something that is hardware dependant and takes hardly any time to code once the 3D model is loaded. Motion captured pit crews is fantastic but still, by today's standards, again nothing too time consuming. 20+ car grids is again a simple programming adjustment and then we have a lot of sprites replaced with 3D models, nothing too hard to do.
So allow me not to be to impressed with the trailer as it shows me nothing special to be honest...
I know there will be a lot of GT die-hard fans saying that this time has been spent on top secret features that will amaze us all when KY/PD are prepared to show us. But realistically since Sony need all the publicity they can get to fight off the XBOX 360's imminent launch I think we've see the best there is so far.
To put it simply if (VGT does exist in some form or title) and it's this trailer and it will be released at launch of PS3 then PD are geniuses. But if this is GT5 and I won't get to play it until 2007-2008 and it will be as ropey as GT4 was (in terms of missing features we all wanted and numerous bugs and glitches) then games like Forza Motorsport will steal it's crown.