Gemballa is a German automobile manufacturer and vehicle refinement company founded in 1981 by Uwe Gemballa. It is based in Leonberg, Germany, and has been registered as an automobile manufacturer since 1985. The company is chiefly associated with bespoke, limited-production vehicles and conversion programs based primarily on Porsche models, while also working with brands including Ferrari, McLaren, BMW and Mercedes-Benz. Its production-car portfolio includes the Avalanche, Tornado, Mistrale, Mirage GT…