I hack a driverless car, again with no passengers, and make it do my bidding (hit that other [thing])
I follow driverless car back to its charging base and slash its tires?
I rearend a driverless car then leave the scene? (same as option 1 I guess - but could be applied differently)
A driverless car gets into its first fatal accident of a passenger, will that lawsuit result in the shutdown of the company? Who specifically will be held to account? Will the developer of the software? Will the engineer who didnt provide sufficient sensors? What if the driverless car looses traction due to black ice, and that results in the death of the passenger or another driver?
Im ubering from place A to place B and my phone dies early in the trip and the uber ride cant bill me?
What happens? There are a lot more questions that should be posed - and we should answer them all.