EMBRACE THE NEW SOLUTIONS
The diesel engine is starting to look doomed. Seriously doomed. That may sound melodramatic, but the signs are there. As we go to press, the mayors of four developed cities — Athens, Madrid, Mexico City and Paris — have announced that they will ban diesel cars and trucks by 2025. Three of them — Madrid, Mexico City and Paris — say they will stop buying diesel buses by then, too. It is within the mayors’ gift for that to happen.