Currently the only true electric bike for two in the market, its 500-watt motor allows riders to easily cruise through hills ad roads alike at a maximum speed of up to 20 mph. Think that’s still too slow? Don’t fret–pedaling allows you to increase speed, even beyond 20 mph. Control of the motor’s speed and six gears is at the twist of the right handlebar. 26″ Kevlar-lined balloon tires and two greatly-padded adjustable triangle seats further ease the ride. Specs: Detachable 48-volt lithium battery (one charge lasts up to 25 miles, depending on rider weight and terrain), portable AC charger, aluminum frame that supports up to 500 lbs (combined weight). Dimensions: 104″ L x 13″ W x 44″ H. (Weight: 67 lbs.)