After a snow storm and before the roads were cleared, it was great fun to sneak behind a car, grab hold of the bumper, squat down and ‘skitch’ down the road.
Yes, back in the early 70's in Chicago that was one of our winter pastimes along with playing hockey and throwing snowballs at passing cars. We used to call it skeetching. Was easy back then with metal bumpers, kids can't do that now.
Here is a video showing the differences between back then and now.
When I was growing up there were a couple of kids in the neighborhood who would never pass up an opportunity to hop on the back of a truck driving down our street. One kid jumped onto the UPS truck and disappeared around the corner, then showed up again about an hour later looking pretty battered and bruised. The truck headed out on a main road and never stopped again, and he apparently had to jump off while it was no interest at a pretty decent clip. LOL.
I did the bumper skiing thing after getting off the school bus back when I was about 10. And to prove a teen doesn’t think things through, I bumper skied on cars doing donuts in a parking lot that had bare patches of pavement exposed.