Well that's the point I was making with my comment. "We don't need different cars" is just the wrong statement. We need to redesign our cities from the ground up to be planned around people, not cars. But that is going to take a good 50 years, assuming a decent amount of effort goes into it. We don't have 50 years. We need better cars in the meantime, not just to ignore the problem they are until we reach the year-2100 utopia where everyone can travel in bicycles and hoverboards.