above 2 images from http://www.caughtonset.com/robert-downey-jr-mark-ruffalo-avengers/ which has incredible coverage of movie stars during the movie making process
below 2 photos I took at SEMA 2012
below infographic is from http://collider.com/avengers-movie-tony-stark-car-images/140630/ because the Sundance Film Festival was a location for marketing of the Avengers movie, and the car and the info were found by Collider.com who lists the info in text on the previous link, instead of you trying to read all the super spy/ high tech gadgets of the below photo. Some of the gizmos are a palm-scan ID steering wheel, enviro-clone projected hologram of surroundings, self-detonating recon drone, night-vision HUD windshield etc etc . Good closeups of the car at the Collider link as well
Similar thoughts about the Iron Man cars had me look to see if they are online somewhere, and I found that About.com has a full listing and some information about the cars in Tony Starks garage. Like the 32 roadster is actually Jon Favreau's. http://exoticcars.about.com/od/famousfilmcars/tp/IronMan2.htm who compared the cars in the garage in Iron Man one to Iron Man 2 and let us know that the Saleen and the Tesla didn't make it to the second movie.