Why would you do that, what was wrong with the lightning on the picture? It's not like there were terribly dark areas while others were blindingly bright? You can also see by the result that there's barely any difference to the original. :?
A simple highlight/shadow correction and some curves would have done a perfect job. I think most people misinterpret the concept of HDR with regards to what exactly it means and when it is useful.
PS: I agree with BCS, waaaaaay to much contrast, first picture I can't even see the difference between the body panel and the wheel, everything is pure black. And my monitor is mildly set up, I can imagine on most screens where the contrast is cranked up to the max it looks probably even worse.