zimmer loved what they represented. >> i think it's the idea of freedom and exploration. i just remember being on the z-bround playing with cars getting over any obstacle. >> and is there a direct line then to lyft. >> i think what i realize is that that freedom wasn't really there and that the car's become more like a $9,000 ball and chain with all the maintenance, the parking so i wanted to go to that original idea that got me so excited about the car but actually delivered the real freedom. >> john first noticed the number of empty seats the in cars on the highway during his drives home from cornell university in upstate new york. >> ten of us would be going back driving with just one or two people, i started thinking about occupisy. how much are these cars used. 96% of the time the car is parked. >> in 2008, zimmer left his job just before the company crashed to pursue his vision of ride sharing with partner logan green. four years later lyft was launched with the signature pink