“What happens when (Google’s self-driving cars) finally make their way onto American highways en masse? (Which, to be fair, Kurzweil predicted for 2019 back in 1999.) What happens if and when it turns out that they’re much safer than human drivers? Insurance costs will make human driving very expensive, and fewer vehicles will be sold–partly because cars will last longer, partly because fractional ownership of a pool of self-driving vehicles will make more economic sense than having your own.”