Siemens has been commissioned by the German state of Hesse to build an overhead contact line for electrified road freight, on a 6-mile stretch of highway that will supply electricity for the electric drivetrain of hybrid trucks. The ‘eHighway’ concept was originally presented in 2012, and now looks like a sensible way of electrically powering trucks and reducing their emissions. Haulers could save enormous sums on fuel costs, if highways authorities can see the environmental benefit and foot the bill to adopt the technology – perhaps through a public-private partnership. Trucks have presented one of the most difficult challenges to those looking reduce vehicle emissions. According to the Environmental Protection Agency (EPA), in 2015 large and medium sized trucks accounted…