everytime the subject of driverless cars come up and someone says they are uncomfortable driving alongside a car controlled by a computer I think to myself "i'm uncomfortable being next to cars driven by a person*".
*a person, that is, who is doing any of the following - texting, talking on their cell, speeding, drunk, high, shaving, putting on makeup, having an argument with a fellow passenger, yelling at fellow drivers, changing lanes without signaling, tailgating, eating... conservatively I'd say it's 1 out of every 3 drivers at any given moment.
** from what I've seen driverless cars are much better able to adjust to cyclists than human drivers.