Heavy duty electric trucks (a.k.a. semis) cost so much less to operate per mile than diesel-powered trucks at today’s prices that they would pay for themselves in just three years, according to a new report by researchers at Lawrence Berkeley National Laboratory, UCLA, and UC-Berkeley. Electrifying heavy-duty trucks would substantially improve air quality. Semis account for just 11% of vehicles on the road, but more than half of carbon pollution and 71% of deadly particulate pollution. At today’s costs, electric semis could cost 13% less per mile than a comparable diesel-powered truck, and could cost just half as much per mile by 2030 with the right mix of policy. (E&E $, The Detroit Bureau; Commentary: Forbes, Silvio Marcacci op-ed)