My WAG is they were probably returning to homebase for maintenance or recharging. Maybe there was a fault in the code and the default is to head back for a firmware upgrade.
What concerns me is that you have a grade A, all-star, Chief Number One threat to public safety right there. Imagine a firetruck having to plow through those congested streets to try and get to a burning house before it becomes a burning block of houses. Or an ambulance with a stroke patient racing the clock to get to a hospital.
How did all the self driving cars go to the same place at the same time? Were they hacked?
My WAG is they were probably returning to homebase for maintenance or recharging. Maybe there was a fault in the code and the default is to head back for a firmware upgrade.
What concerns me is that you have a grade A, all-star, Chief Number One threat to public safety right there. Imagine a firetruck having to plow through those congested streets to try and get to a burning house before it becomes a burning block of houses. Or an ambulance with a stroke patient racing the clock to get to a hospital.