As you can see in the picture the wheels are in the square shape. First time that I see this bicycle I start to think that how can it move with a square shape.Then I read a definitions of this bike.And it say that this bicycle rides more smoothly than you might think. The secret is the shape of the road over which the wheels roll. The wheels can keep the bike moving in a straight line and at a constant velocity as long as it’s traveling over evenly spaced bumps of just the right shape, called an "inverted catenary". It very amazing that a square shape wheels can ride and smooth than some bikes.
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