Demand for cars is still huge during rush hours. Lots of cars sit idle during low demand times, but that capacity is still needed to meet high demand times.<p>The problem isn&#x27;t getting people into the same car. The bigger problem is getting people into the same car at the same time. Sure, self-driving cars can work with each other in ways human drivers can&#x27;t to minimize congestion, but until you start removing cars from the road, it will still be an issue.