Our editors have compiled a list of the “Top 5 Strangest (or Coolest) Bikes” for your enjoyment. Which ones are your favorites?

5. Dekra D-Drive Chainless Bicycle

Dekra’s D-Drive puts a new twist on chain-driven bicycles by replacing the chain with an internal drive shaft for maximum safety and comfort. Priced at a reasonable $300, the D-Drive also comes with alloy linear-pull brakes, which gives the rider “greater control of speed and braking, no matter the terrain”. Available now from DyncaCraftStore.

Upright, ergonomic handlebars help reduce lower back stress. Shock absorbers in the seat and front forks work to control bumps. Thickly cushioned hand grips let you feel the road while reducing unpleasant vibrations

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4. Electric-Human Hybrid Bicycle

The Optibike is the world’s first electric-human hybrid bicycle, “with a range of 25 to 30 miles (40 to 48 km) and very clever microprocessor-controlled electronics.” Shimano XT 7 speed Derailleur gears allow the motor to be assisted by the rider at all speeds.” Available now for $5500.

This means the Optibike will run at 20 mph (32 km/h) on the battery alone, cruise at 25 mph (40km/h) with gentle pedalling and with some aggressive pedal assistance, run with the traffic at 35+ mph (60 km/h)

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3. Sideways Bicycle

Sideways BicycleMichael Killian invented this strange yet functional “Sideways Bicycle” concept, where a “rider sits either sidesaddle or facing toward the front, manipulating controllers that steer the front and back wheels independently.”

Michael tells us “the ride is very graceful and akin to a snowboard, with swooping circles and curves.”

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2. Jet-Turbine Powered Bicycle

Jet BicycleThis strange bicycle is powered by two Jetcat model aircraft jet-turbines and looks quite interesting to say the least. Unfortunately, no instructions were provided on how to build your own.

1. A-Bike

A-BikeAt just 12-pounds, Sinclair’s A-Bike is the world’s lightest folding bicycle and can be folded or unfolded in just 10-seconds.

Despite the tiny wheels, the bike can achieve normal speeds without forcing you to pedal like a madman. The completely enclosed chain system means that your pants cuffs won’t have the telltale grease marks of a bicycle commuter, also

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