I guess there are jet powered bicycles!

[Kevlarr]

Jet rocket bike. Fast as, 236 khm.

And if your neighbors think your bike is too noisy just show them this video and tell 'em you're ordering one!

Pulsejet powered bike

 

[bugoutbike]

to cool! or maybe to hot!

 

[Kevlarr]

Holy crap!

This guy is my HERO!

 

[vooodooou]

that's one crazy passing gear. lol