I guess it would be hard, with some drivers human and some automatic. I guess it will be quite confusing until it is all automatic or we stick with human driving, because if it is all automatic there can be robotic recognition and a grid. You know, all that technological stuff. :)

How much does it cost? What if there is a car wreck: who would be blamed?

Interesting, interesting. Hmm, what about other candies, or does everyone like only chocolate? :)

They just want to make sure everything goes well and the people won't die. :) If they go too early, something not done right may cause an emergency or disaster.