Jet engine specialist Robert Maddox has created his own "Steampunk" jet-fuelled bike. While it looks like it surely won't work, it does, and it's a fun ride (to watch).
Maddox is a jet-engine specialist, who "designs and builds the largest pulsejet engines in the world, engines from 14 pounds of thrust to engines with over 1000 lbs."
Enjoy the ride: