The "drop off lane" at my local elementary school is already a 30 minute traffic jam, and that's with parents in the cars hurrying the kids along and school staff directing traffic. You think a robot car is going to get a kid out of a seat with their backpack and lunch faster than a parent? The pick-up line is even worse, as the kids are individually dismissed after the driver has been authorized by the school staff. The current breed of self driving cars would flip out trying to navigate an elementary school parking lot with kids running all over the place and crossing at random spots. The idea of a robot car delivering my kids to school so I don't have to is appealing, however I can't imagine a worse application of the technology, given the reality of the situation.

If you can allow your kids to "free range" just a quarter mile, then they could be dropped off in a much less crowded place.

Yeah, forget autonomous vehicles having to cope with snow/ice etc, if they can deal with my schools parking lot at the start and end of the day, they'll be able to handle anything.