The Bi-Autogo was a prototype American cyclecar, built from 1908 to 1912.
Designed and built by Detroit artist & engineer James Scripps Booth, it had the usual two wheels (wooden-spoked, ), plus two pairs of smaller, retractable outrigger wheels in the three-seater body. Fitted with wheel steering, it had a 45 hp (33.5 kW) V8 engine (, ), the first of its kind from a Detroit company, with an external copper tube radiator, and a weight of . Just one was built. It is in the collection of the Detroit Historical Society. The Bi-Autogo was restored in 2017 by Mobsteel in Detroit.