Testing of software adds to urgency in race for driverless cars

By Edward Taylor FRANKFURT (Reuters) - In the race to build a self-driving car, German automakers are hitting a road block in their efforts to test vehicles so complex they need more than 10 times the amount of software found in a fighter jet. German laws currently place limits on testing on public roads. Automakers fear this is allowing U.S. competitor Google to pull ahead in developing software, specifically progammes that will give cars the correct reflexes in real-life traffic situations. Fo