“The smallest automobile in the world – Designed and built by Gus Petzel of Alameda, California. The car had a 4-cylinder air cooled motor, 3-speeds, electric lights and starter, 60 inch wheelbase, 21″ x 4″ airplane tires, and weighed 560 pounds. It gets 52 miles per gallon and has a top speed of 65 mph on the road and 80 mph on the track. Cost $2,000 to build.”

theoldmotor.com