Hydromotor / Hydrometer

The Hydromotor, also marketed as the Hydrometer, was an amphibious automobile produced by the Automobile Boat Manufacturing Co. of Seattle, Washington. It was contemporary with the Hydrocar, another amphibious vehicle of the era, but differed from it in that it traveled in the same direction whether operating on land or in water. The prototype was fitted with a Haynes engine, though production versions were intended to use a Continental engine…