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http://www.bbc.co.uk/bang Jem Stansfield attempts to become the first person ever to jump a forty-five degree ramp on a square wheeled motorbike.
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http://www.bbc.co.uk/bang Jem Stansfield puts his square wheeled skateboard to the test!
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An interview with builder of square wheeled bike.
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Square wheeled bicycle from the German museum in Munich.
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The Texas A&M Physics Department's square -wheeled trike, built by the machine shop. The trike rides on a road of repeated pieces of an inverted catenary.