says man who exposed VW emissions scandal What is the market leader in equipment for measuring car emissions to do if the vehicles of the future don’t spew exhaust? Japan’s Horiba, whose gear was central in exposing Volkswagen’s diesel-cheating scandal, believes that day will never come. Electric vehicles won’t ever make up more than a third of cars worldwide, says chief executive Atsushi Horiba, because it’s just not feasible to build the scale of infrastructure to enable battery-powered cars.