Drawings of Bicycles - Never Underestimate Human Powered Vehicles!

Ever since their invention in the 1800s, bicycles have taken off as a common mode of transportation. The biggest upside to cycling is that it doesn’t cost much more than the bicycle and maintenance, and it can even be faster than cars in dense urban centers.

Design-wise, there're simple bicycles and then the ones used by professional cyclists that are truly feats of modern engineering.

Do you have a bicycle? Is it like any of the ones featured below?