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In 1905 Kael Lange patented this "double bicycle for looping the loop."
The idea was that you'd roll through the loop, sail across the gap, and land upside down on the other side.
It has no brakes.

In 1905 Kael Lange patented this "double bicycle for looping the loop."
The idea was that you'd roll through the loop, sail across the gap, and land upside down on the other side.
It has no brakes.