Francis Edgar Stanley invented the Stanley Steamer, a steam-powered automobile. In 1918, he crashed the car into a woodpile to avoid colliding with a farm wagon. The manufacturer met its match against competition with internal combustion engine vehicles, and was defunct in 1924.
A captain for the Royal Navy, Cowper Phipps Coles created a patent for the design of the revolving gun turret in 1867. In 1870, he was aboard a masted turret ship that he designed when it sank off the coast of Cape Finisterre in Spain. He and his crew drowned.
Valerian Abadovsky created the Aerowagon, a high-speed railcar fitted with a large propeller and aircraft engine. It was produced to transport Soviet documents and government officials on business. In 1921, while on a test ride, the railcar derailed while going at such high speeds, causing the deaths of Valerian and six others on board.