much higher stakes and much less response time. There are plenty of city drivers that get confused and, well, pull over or even just stop. it's irritating, but

much higher stakes and much less response time. There are plenty of city drivers that get confused and, well, pull over or even just stop. it's irritating, but a sensible thing to do. On a freeway, that's terrifying. It _seems_ like lots of parallel systems, each with the capability to reduce speed or stop could cope with city traffic about as well as a tourist. but, uh, I guess $2.5B says otherwise.