After being inspired by all the great automotive renderings on the forum, I thought it was time to give it another try. Model is from the Deelip.com rendering contest awhile back.
(http://i1099.photobucket.com/albums/g382/chageman1/porcshe-2131-B.jpg)
(http://i1099.photobucket.com/albums/g382/chageman1/porcshe-3-B.jpg)
I shot the backplate in 2006 ;-), and the HDRI as well. You need to work a bit on the lighting composition, and the shadow. Are you using the matching HDRI?
Thomas,
I don't seem to have the matching HDRI. I looking to find something close, but not quite there yet.
Found HDRI--here is screen shot with updated HDRI
(http://i1099.photobucket.com/albums/g382/chageman1/porcshe-2-C.jpg)
Starting to look better - rotate the HDRI so it is more in line with the lighting of the background image.