Bicycles were first developed in Germany in 1817 and likely were created to replace horses that had died due to the 1816 crop failure. The original bikes had no gears and cyclists would use their feet against the ground to glide forward, somewhat like Fred Flintstone. Cycling took a quantum leap forward in 1865 when J.K. Starley devised the chain-and-gearing system. The race has been on since then for engineers to invent faster, sleeker, and lighter bikes.
Bicycle motocross (BMX) started in the late 1960s in California, with children racing their bicycles on dirt strips to emulate their motocross heroes. Purpose-built tracks were created and popularized nationally when a motorcycle documentary called “On Any Sunday” featured kids racing off-road in the opening scene.