It can happen to any of us, we lock our bike up, come back after a few hours and our front wheel is missing. What do we do? Buy a new wheel? Take the bus home? Or do a really wrong wheelie?
Now doing a wheelie without a front wheel and still maintaining balance and riding through traffic is quite simply breathtaking as the video below shows. It shows a Chinese cyclist wheelieing down the road in quite a bit of traffic.
It does lead to the problem of what happens when he stops pedalling, particularly when traffic is heavy. I guess that is why he has a travelling companion with him.