Southeast Portland-based bike designer Bill Stites intends to take the burden off your shoulders with his three-wheeled bike called the Truck Trike. The electric and human-powered vehicle could carry 800 lbs. of cargo with extreme ease. While your legs drive the front wheel, the patented StitesHub coupled with two power pods in the rear come into action to relieve you from exertion. You need to push the throttle with your thumb to see it working.