no prob, I know it can be hard finding good car pictures. Try googling hummer h2 wallpaper etc.. I found this one here
http://www.desktopmachine.com/framep...994&size=w1920
Not the h2, but it had a good angle, just remember to keep the car darkened since it is under that dark bridge, and it needs shadowing under the car, I did mine with a black brush and reduced opacity and slowly built it up. Hope you don't mind I tried out the H3 hummer , a very crude chop but just spent a couple mins on it. The reflections (or lack of) on the h2 I put in dont really match the enviroment.
Also you might want to try and clone out those white spots beside his head,neck shoulder area, their a bit distracting.
P.S. my last post is wrote P.S. without the periods and it turned it into photoshop automatically haha
*edit*
Oh just found this one, would work well I think once you fix the white balance.
http://i63.photobucket.com/albums/h1...7_escalade.jpg
Cheers