* Mechanical: pull over and wait for a service truck. Not much different from what happens now. Likely fewer issues overall as these trucks will probably be e

* Mechanical: pull over and wait for a service truck. Not much different from what happens now. Likely fewer issues overall as these trucks will probably be electric. * Route planning isn't that hard of a problem; design the system such that running out of gas/battery is a whatever-sigma chance. Automation means lots and lots of data about the roads to base this on.