That estimation may change in the coming decades. Self driving cars would allow for pooling and far greater car throughput on existing roads (no human latency/error, synchronized top speeds)
Even if self-driving cars were perfect and every manufacturer came out with one tomorrow, it would still be 20 or 30 years before the existing cars on the road were all replaced. To say nothing of the decades of R&D that will be required starting now in order to get us to that point.
I think it's naive to suggest this as an alternative when we could have working mass transit systems using proven equipment within a decade. Why would we wait for what might come when we could have something better today?
I think it's naive to suggest this as an alternative when we could have working mass transit systems using proven equipment within a decade. Why would we wait for what might come when we could have something better today?