That first guy didn't look too sure about that from the get-go. If you're going to do it that way, don't stop in the middle. I'm not exactly sure what the second guy was planning on doing there without a stool. I guess he was going to jump up on the truck bed?
I remember one time tumbling off my dual ramps up at croom and the bike (fortunately a lite yz250f) fell right on top of me. I'd finished my ride in the northeast corner and everything was covered with clay...bike, boots. Very slippery stuff on a steep aluminum ramp. It would have made an awesome video!

I'm sure it was an interesting feat getting this bike up on that car.