The 'Relativity Special'..............

[Justdroppedin]

pedaling at 90rpm would theoretically achieve ~2.7x the speed of light


https://i.redd.it/tr5hsq7dqimd1.png

[Terryl]

Or a 99.9% chance of getting a pants leg caught in a sprocket......

[runamok]

Fastest bike pedaling speed is 183 mph in a draft

[dogdayz]

A human leg probably can't provide enough torque to pedal with that gearing.