The commentary in this video is all in French but they first show a rocket engine and a fuel tank strapped to the back of a bike. The seat has been modified and is on top of the fuel tank. It appears to be some kind of liquid rocket fuel. Anyway, a guy in a helmet and a motorcycle suit climbs onto the bike and fires the rocket off. He shoots off down the speedway trailing some thick black smoke until the rocket fuel runs out. They cut away (so we don't get to see how he managed to stop it) and show that the bike was clocked in at 140 miles an hour. That is some hefty speed for a bike.
The commentary in this video is all in French but they first show a rocket engine and a fuel tank strapped to the back of a bike. The seat has been modified and is on top of the fuel tank. It appears to be some kind of liquid rocket fuel. Anyway, a guy in a helmet and a motorcycle suit climbs onto the bike and fires the rocket off. He shoots off down the speedway trailing some thick black smoke until the rocket fuel runs out. They cut away (so we don't get to see how he managed to stop it) and show that the bike was clocked in at 140 miles an hour. That is some hefty speed for a bike.
