Things that you would like to see cars and tracks?
I'll go first (sorry I don't know how to embed videos properly on here)
Cars
ford puma by gould racing - http://www.youtube.com/watch?v=e49TPk2AW5c
Nike one race car - http://www.youtube.com/watch?v=1WXpxH-kerc
aero 8 morgan - http://www.youtube.com/watch?v=IJuOJh54HJE
arial atom - http://www.youtube.com/watch?v=RyYnN71rEKk
Vauxhall corsa 2.0 litre red top ;) http://www.youtube.com/watch?v=6swjSkPhMlU&feature=related
More photo locations from GT4 such as the grand canyon http://www.youtube.com/watch?v=TrI9cPdkY_I
Tracks
http://www.youtube.com/watch?v=UBgsnYHzaRo - Citta di Aria
http://www.youtube.com/watch?v=C3oGrbly960 - Costa di amalfi Probably my favorite two
http://www.youtube.com/watch?v=7ujhOwfGPnY&feature=related -Test course (this was in ever gt game i have no idea why they removed it)
http://www.youtube.com/watch?v=bGP28KzHZiM Pikes peak hill climb......all the way from GT2