While self-driving cars may be safer and cheaper, the Associated Press warns they could also create massive traffic congestion. "The problem, say transportation researchers, is that people will use them too much." One auto industry expert predicts that self-driving cars will increase travel by those over 65, as well as those between 16 and 24, resulting in at least 2 trillion extra miles being driven each year. In addition, "Airlines also may face new competition as people choose to travel by car at speeds well over 100 mph between cities a few hundred miles apart instead of flying," and faster commute times could mean more urban sprawl as workers may spread into cheaper neighborhoods that are further from the city center.
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