We can design driverless cars that cannot cause an accident

The rules of the road today are all focused around one key element: drivers. Licensing, insurance, traffic laws — everything assumes vehicles are operated under the control of a human.
For driverless vehicles, this presents a dilemma: How can you tell which car is at fault in an accident? Should we license and insure owners or manufacturers or the cars themselves? More importantly: How can self-driving and human-driven cars co-exist safely?
Before society will welcome autonomous cars en masse, we must answer those questions — and others — with certainty. People have expressed apprehension about self-driving vehicles and are unlikely to accept them ...