BURLINGAME, Calif., September 19, 2018-- Today Proterra, a leading innovator in heavy duty electric transportation for the North American mass transit market, announced that it has closed a $155 million investment round co-led by Daimler, the world’s largest manufacturer of commercial vehicles. Tao Capital Partners co-led the round, joined by G2VP and other technology investors. In conjunction with the investment, Proterra and Daimler have entered into an agreement to explore the electrification of select Daimler heavy-duty vehicles.