Driverless cars are not coming. They are here. Indeed, they have been around for awhile, though mainly in the shadows on the edge of legality. But regulatory changes in California and other states are giving cars that drive themselves the right to use public roads. Their next stop may be your garage. People who follow the auto industry shouldn’t be surprised by the arrival of automated autos. The writing has been on the wall for a long time. A decade ago car makers like Mercedes-Benz began rolling out cars with active cruise control that manipulated the car’s throttle and brakes to maintain safe following distances in traffic. Read the full story at The Wall Street Journal blog.