Technology - especially the technology required for a network of self-driving cars- creates the possibility of catastrophic failure. A multi-car pileup is a tra

Technology - especially the technology required for a network of self-driving cars- creates the possibility of catastrophic failure. A multi-car pileup is a tragedy, a multi-highway pileup is a catastrophe. Also, losing control is generally psychologically unpleasant. I'm not sure we should exclude this from the cost/benefit ledger.