The recent uproar over Volkswagen ’s diesel vehicles could spur drivers to switch to gasoline vehicles, analysts say. Would that affect diesel prices? A world-wide shift away from diesel vehicles would reduce demand for the fuel, further lowering prices. But if the shift were limited to cars in the U.S. and Europe, it might not have much of an effect. In developed nations, increased fuel efficiency and more use of vehicles that run on electricity or other fuels is already expected to limit demand for both gasoline and diesel. The global diesel market is facing a glut that could last for years . Refiners have invested in new diesel capacity in the past decade, but demand growth has lagged behind expectations. Countries including the U.S., Saudi Arabia and China are competing to sell their diesel around the world, weighing on prices. Diesel futures have plunged in the past year […]