We've all done something like this. Usually we back into a pole and are greeted with a horrible metal-to-metal sound, stop backing up, and move forward.
This fellow didn't have a chance. The top part of this pole is wedged under part of his rear bumper. Try as he might, he couldn't get the bumper to give a little, nor of course could he do much about the pole, which has been leaned forward a bit.
This is right downstairs from me and I was in the parking walking my dog. Heard the screech.... I'll go back later and see if he managed to get loose.