Rotrax was a British car manufacturer based in Bradford-on-Avon, Wiltshire, later associated with J.S. Rotrax of Bristol, Avon. The marque was founded by Dennis Adams, a designer previously known for his work with Marcos, who made his debut as an independent car maker with the Rotrax. The design drew on earlier work Adams had produced for Glenfrew and quickly gained popularity for its rugged, toy-like appearance. The Rotrax featured a…