West Virginia Gov. Earl Ray Tomblin signed into law a tax credit in 2011 that covers 35% of the cost for “alternative fuel vehicles”—up to $7,500 for passenger cars and $25,000 for large trucks. His “good intentions” are costing too much. The original bill covered many types of alternative fuels, including electric and coal liquids. Gov. Tomblin wants to change that. He’s proposing new legislation that eliminates the tax credit—now—for all vehicle types except those that run on natural gas.