[So one professor, later followed by others says that this wind powered vehicle is doing something impossible. It cannot go faster than the very wind that is blowing it. And he agrees to a bet … which he proceeds to lose! Jan]

Here’s the video:

https://worldtruthvideos.org/watch/old-cocky-physics-prof-looses-10000-bet-quot-i-am-100-sure-i-know-you-don-t-quot_CNQ1WUEcQNnTRDk.html