Hands off! The Freightliner Inspiration, a high-tech version of Daimler’s popular 18-wheeler, is the first self-driving semi to be licensed in America. In 2012, 330,000 truck collisions caused nearly 4,000 deaths — 90 percent due to driver error. Autonomous big rigs aim to make trucking safer by taking control on the highway and alerting drivers when conditions require the human touch. But they need to log another decades’ worth of interstate miles before hitting the market, so commercialization remains … down the road.