Different paths could lead to autonomous cars

Cars that drive themselves would mean a revolution in how people get around. But they might arrive just as much by evolution, with everyday cars getting gradually smarter, as by sudden shifts to fully self-driving vehicles. Autonomous driving -- and its potential for sweeping change -- was much on the minds of top auto executives at the Geneva International Motor Show. The exhibit space in Geneva was mostly used for the show's primary purpose: showing off product to the news media and the public in order to boost sales. The display stands were dominated by expensive sports and luxury cars for the rich and new SUVs for more middle-class buyers.