Bille, great video of the old guy (Sweede? Norway? Denmark?) doing it.
I had wanted to learn to kite surf, until one day at a cat regatta, there was a pretty good on shore breeze blowing and some kite guys were rigging up. I said to my 10yr. old son, "That looks like fun, I think I'd like to try that." And went back to rigging my boat.
In about 2 minutes, I hear a scream, look up, there's a guy on a kite passing overhead, from the beach to the parking lot! He bounced on a car hood, then launched up again, and came down on the pavement the second time!
I looked at my son and said, "Nah...maybe not."