The U.S. transportation sector is the largest national source of emissions, and burning fossil fuels in vehicles contributes to well-documented public health hazards like lung disease, stroke, and premature death. Because a typical car, truck, SUV, or motorcycle may operate for one or two decades, transportation sector decarbonization requires all new cars sold to be fully electric within the next decade. Significantly increasing electric vehicle adoption requires significant investments in ubiquitous charging infrastructure, rate design to encourage off-peak charging, along with numerous other policies to support an equitable transition for all consumers and businesses.