In Massachusetts and Rhode Island, emissions from transportation are our biggest climate problem. Although emissions from electricity generation aren’t dropping as fast as we need them to, energy efficiency programs, renewable energy development, and the Regional Greenhouse Gas Initiative have put power-sector emissions on a downward trend. Unfortunately, we can’t say the same about transportation emissions when almost all of our cars, trains, buses, and other vehicles run on petroleum internal combustion engines. Vehicle electrification is absolutely necessary for us to attain our climate goals.