I had the same question after seeing the new movie last night.
I used to have the AMT/ERTL Batmobile from the first movie (with Michael Keeton). I messed up the paint job and tried to remove the paint with enamel thinner and then got frustrated and tossed the kit. This was more than ten years ago, and I didn't know any better.
I'll probably pick up another one. I'd also like to make the Batmobile from the '60s TV show that I saw so much on daytime TV when I was growing up in the '80s.
I found a model of the new one, but it's already assembled and very expenseive:
http://www.entertainmentearth.com/prodinfo.asp?number=DC24705
Regards,