Their cars are deathtraps without human drivers.
Meanwhile, insurance companies estimate humans average about 250,000 miles between accidents. Factor in unreported incidents and we get a safe estimate that human drivers could be closer to 150,000 miles between accidents.
At the most generous factor I can provide, humans are three times better drivers on average than Self-Driving Cars.
...But wait. During the same 424,000 miles, the cars' automated driving system had a system failure, reverting to the human driver, 272 times. (Roughly every 1,500 miles.) Without a human driver to take the wheel, who knows how many more accidents they could've caused.
The secret to the Self-Driving Car's safety record isn't their software. It's humans. Google's "1.4 million miles driven" isn't a really useful statistic, because it ignores all of the "hard parts" of driving where humans had to take over and save the car. Bear in mind, Google's test drivers are trained, and are attentive and alert at all times to quickly take over control. The human test drivers, therefore, are better than the human average, and that's where your safety figure comes in.
Source: http://static.googleusercontent.com/media/www.google.com/en/...
This is appealing to me because I have no special attachment or interest in cars other than as a means to get from point A to point B. I understand many people enjoy car ownership and the culture surrounding it, but I just want a tool.