"When a calendar comes to the end of a cycle, it just rolls over into the next cycle. In our Western society, every year 31 December is followed, not by the End of the World, but by 1 January. So 126.96.36.199.0 in the Mayan calendar will be followed by 0.0.0.0.1 - or good-ol' 22 December 2012, with only a few shopping days left to Christmas." - Excerpt from Dr Karl's "Great Moments in Science".
Eh it goes both ways, with a smart driving car things become more efficient, but is that efficiency worth losing potential costs. Do we really need this technology no, but technically it would cut down on accidents, road rage, reckless driving, speeding problems. It would also eliminate the need for ordinances of "texting bans".
It would also mean I kid or under being can go places without having to have an adult present, if that is a good or bad think we don't know.