I know I've been looking for this for a while so whilst I have the url I thought I would post it.
(http://download.xbox.com/content/mgs/forza/en-US/forzamain/Cars/Bugatti_logo.jpg)(http://download.xbox.com/content/mgs/forza/en-US/forzamain/Cars/Ferrari_logo.jpg)(http://download.xbox.com/content/mgs/forza/en-US/forzamain/Cars/Gumpert_logo.jpg)(http://download.xbox.com/content/mgs/forza/en-US/forzamain/Cars/Lamborghini_logo.jpg)(http://download.xbox.com/content/mgs/forza/en-US/forzamain/Cars/RUF_logo.gif)(http://download.xbox.com/content/mgs/forza/en-US/forzamain/Cars/Cars_ComingSoon.gif)
Forza Motorsport 4 Cars Manufacture List (http://forzamotorsport.net/en-us/Cars/ManufacturerList.aspx)
(http://download.xbox.com/content/mgs/forza/en-US/forzamain/tracks/Logos/Alps_Logo_thumb.jpg)(http://download.xbox.com/content/mgs/forza/en-US/forzamain/tracks/Logos/Hockenheim_Logo_thumb.jpg)(http://download.xbox.com/content/mgs/forza/en-US/forzamain/tracks/Logos/Track_Logo_Indy.jpg)(http://download.xbox.com/content/mgs/forza/en-US/forzamain/tracks/Logos/Track_Logo_ladera.jpg)(http://download.xbox.com/content/mgs/forza/en-US/forzamain/tracks/Nurburgring/nurbgp_logo.jpg)(http://download.xbox.com/content/mgs/forza/en-US/forzamain/tracks/Logos/TopGear_Logo_thumb.jpg)
Forza Motorsport 4 Track List (http://forzamotorsport.net/en-us/Tracks/TrackList.aspx)