Google cars drive like little old ladies

Google's driverless cars are being tweaked to drive more as if there were a human behind the wheel - they'll cut corners and edge forward into junctions. The vehicles' "overly cautious" driving habits were seen as possibly contributing to accidents involving cars with human drivers.The self-driving vehicles have racked up more than a million miles on California's roads but often drive with such extreme care - leading to abrupt braking, for example - that human drivers cannot anticipate what they...