I had the same thing happen to me a few years ago when I was driving a GMC truck. The other guy had a big Dodge Ram, so my headlights slid under his bumper pretty much. He hopped out of his truck right afterwards and said he was fine. The cop asked him if he thought his truck was driveable or if he needed an ambulance, and the guy declined. His tail light cover was gone, and his bumper was dented, and maybe had a scratched tailgate. The dude drove away just fine, but then my insurance told me he claimed $12,000 on his truck and $6,000 personal injury. I was like BULLSHIT, but it was too late, my insurance already cut the check.
So be happy if you don't get hosed by that Cherokee driver, but still sucks about your car!!