Self-driving cars could eventually save the U.S. hundreds of billions of dollars because of a dramatic reduction in traffic crashes, according to a new study. GPS tracking company Global Positioning Specialists found that the U.S., which loses more money on car crashes than any other country in the world, could save $306 billion a year due to the impacts of autonomous and connected vehicles.  The study calculated the percentage of gross domestic product (GDP) lost to all types of road crashes each year and factored in how much of that would likely be reduced by driverless car technology. It’s estimated that self-driving cars could cut the 90 percent of crashes caused by human error.