A hobby he shares with his father and brother, monowheeling is a type of action sport requiring the user to ride inside a motorized wheel ... You give it too much gas, it's going to ride up ...

Enter the BAC Mono. Now, there is still a prohibitive price barrier here – it costs darn near 80,000 pounds ($134,000 at today's rates) in its home market – and it's a pretty single-minded beast.