Trolleybuses may be long gone from our roads, but the concept behind them is once again being evaluated, this time for HGVs: Although numerous governments and major truck manufacturers are exploring liquid fuel cell technology as a means of reducing CO2 emissions in road freight transportation, Germany is additionally considering an entirely different approach, with a government advisory body recommending railway-style overhead lines along 2,500 miles of its autobahn network. It is still uncertain whether the country will greenlight this unique solution, but automotive systems firm and tyre maker Continental shares that it’s already working to develop pantographs for the system.