1. The Monowheel
The monowheel, a curious invention from the late 1800s, featured a single, massive wheel with the rider either inside or perched above. While its futuristic look turned heads, the design was plagued by stability and steering problems, making it unreliable and even dangerous for everyday travel. Even 20th-century revivals like the “Dynasphere” failed to catch on. Discover more about the monowheel’s quirky history at Smithsonian Magazine.
