America’s current fleet of gasoline-powered cars and trucks leaves us dependent on oil, contributes to air pollution problems that threaten our health, and produces large amounts of global warming pollution. “Plug-in” cars are emerging as an effective way to lower global warming emissions, oil use, and smog. A plug-in car is one that can be recharged from the electric grid. Plug-in cars come in two types: plug-in hybrids that are paired with small gasoline engines, and fully electric vehicles that consume no gasoline at all.