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Karl Drais invented a velocipede which is now called a monowheel bicycle, tricycle or quadcycle.
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The first steam powered velocipede. Made by Ernest Michaux. He did it by fitting a small steam engine to one of the velocipedes.
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A petroleum fueled motorcycle. It was designed and built by a german inventor Gottlieb Daimler and Wilhelm Maybach.
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In the 1970's the first dirt bike was made. It was popular for offroading and a form of recreation. They soon decided to fit every racer with dirt bikes.
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They made the 2nd dirt bike a 2 stroke