The truth is, in many places it is NOT a requirement to get to work, it's a luxury that people are used to having, and it may make getting to work easier/nicer, but most of the population lives in cities, usually those have public transportation.
Whether we like it or not, the fact remains that the commute to work on a daily basis is more than likely the most dangerous part of our lives (although fortunately, it seems to be at an all time low). However, the fact remains that there is an enormous quantity of bad drivers on the road, especially considering it's fairly difficult to lose your license. I think it'll be a long while before we see fully automated driving, but if Google can somehow cut into the 30,000+ traffic deaths a year, I'm all for it.