Google has been secretly creating and testing a car that can drive itself automatically through artificial-intelligence software, as well as computer hardware resting in the trunk.

This car even has a personality of its own, such as "cautious" or "aggressive," to fit driving conditions.

Says Google, "Our automated cars use video cameras, radar sensors and a laser range finder to “see” other traffic, as well as detailed maps (which we collect using manually driven vehicles) to navigate the road ahead. This is all made possible by Google’s data centers, which can process the enormous amounts of information gathered by our cars when mapping their terrain."