Waymos are NEVER "driven remotely". Occasionally there are problems of being stuck (at 0 mph) due to a lack of aggressiveness or the refusal to violate a rule,

Waymos are NEVER "driven remotely". Occasionally there are problems of being stuck (at 0 mph) due to a lack of aggressiveness or the refusal to violate a rule, or being in a loop the car can't figure a way out of. Often times this is just a safety precaution, at this early stage, of wanting a human in the loop to confirm a plan, but sometimes it's because the system isn't robust enough to properly make the plan and I'm sure that's where a lot of the development effort is currently pointed -- reducing these events to as close to zero as possible. That's the long tail. It never really quite goes away.