"It was 1968. Traffic was at a complete standstill, again, on a busy boulevard in what is now known as the Silicon Valley. Sitting within their cars were many commuters who were overweight and out of shape, breathing unhealthy exhaust fumes. As a young engineer working at my first job at a research and development laboratory for a major corporation, it seemed intuitively that there must be a better way to move people around than this ..."
More here on this human/electric hybrid: a perfect way to take care of the planet and get a bit of exercise, at the same time.