Today, we have an amazing six-wheeled steam-powered Boattail roadster for you, made by motorhead, Jim Belosic. Created in about four years, this steampunk uses a bare 1928 Ford Model A-frame and a two-cylinder steam engine. Apart from these parts, everything else is custom-built by Belosic.
The creator employed a 3.5-gallon boiler and two 400k-BTU burners to generate steam. The engine only generates 5 horsepower, so you can imagine how fast it can go with this much power.