Most proponents of self-driving cars cite benefits to driver and passenger safety and traffic decongestion as some of the biggest benefits of the technology, which continues to face tough opposition, especially after a series of accidents attributed, properly or not, to autonomous driving technologies. Lyft, however, is trying to appeal to a slightly different side of the same coin: economy and ecology. It so strongly believes in the self-driving future that it predicts that by 2021, majority of Lyft rides will be on self-driving cars. Even more, by 2025, private car ownership in the US will be no more. At least almost.