Before Tesla... 1960s/70s Electric Cars (EVs Part 1)

You might not think it, but the 60s and 70s were a hot bed of innovation in electric car design. Environmental and political events collided that got people questioning our reliance on the internal combustion engine and thinking about alternatives. So why was so much effort put into electric cars when so few people bought them, and how close did we come to perfecting hybrid and EV technology?