Sweden opened a stretch of electric highway, becoming the first country to test electric power for heavy transport. A 22 kilometer (or roughly 13 miles) stretch of the E16 road—which connects Oslo, Norway, to Gävle, Sweden—is fitted with power lines overhead, developed by Siemens, providing electricity to hybrid trucks. The system works like a tram system. A current collector on the trucks will transfer energy from the power lines to the trucks’ hybrid electric motors,…