Ok, so you know in a padal-boat, if only one person is pedalling both sets of pedals are spinning because they’re connected. Forget about the boat, put it on some wheels. Now consider 4 sets of pedals, all connected to a common chain, leading to a bigger, better version of a gear assembly from a 12-speed bike. 4 people adding their force would mean 12th gear could be 4 times harder to turn, which would make 4 times the speed. This could mean very fast, people-powered, vehicles that have no emmisions and combat the escelating health concern of obesity.
revdotallusion 