Google Tries to Jump-Start the Driverless Car, But Big Questions Loom

What’s the News: Google’s self-driving cars have been generating buzz lately, with the news that the company has been lobbying Nevada to allow the autonomous vehicles to be operated on public roads. But it remains to be seen whether hordes of self-driving cars really going to work in the real world.How the Heck: Google’s driverless cars are equipped with video cameras, GPS units, radar sensors, and a laser range finder. They learn a route as a human motorist drives along it, and on subsequent trips the cars take over, using their sensors to react to changing conditions, like when pedestrians are in a crosswalk. Google’s vehicles have two people aboard during tests, one observing from the driver’s seat and one keeping an eye on the car’s equipment. Not So Fast: