Tesla Motors
Martin Eberhard and Marc Tarpenning had both taken test drives in the lithium-ion battery powered revision of the AC Propulsion tzero before joining Tesla Motors. Martin Eberhard encouraged Tom Gage and Alan Cocconi to move their prototype tzero into production. When they declined, in favor of working on their electrified Scion xB called the eBox, Martin Eberhard and Marc Tarpenning incorporated Tesla Motors to pursue the idea of building an electric roadster in the spirit of the tzero. Elon Musk later test drove the tzero as well, and he also encouraged AC Propulsion to commercialize the vehicle. Tom Gage again deferred, but put Elon Musk in contact with Martin Eberhard which led to Musk becoming Tesla Motors' first major investor through Series A funding.