Are we approaching an era of self-driving cars? “Fred Flintstone had a car that he had to power with his own feet; by that standard, all of today's cars are pretty easy to use. But cars are becoming even more user-friendly -- so user-friendly, in fact, that they may not even require a user at all. That's because much of the new car technology involves taking over the role of the driver. For instance, no longer does a driver need to mind the blind spots, as certain cars come with detection systems that will alert the operator to obstacles in other lanes. If a driver should start to drowse off and drift into another lane, the steering...