[MrBirdman330]

While Diesel car popularity is growing mainly for the VW Diesels since they're very clean the problem is that Diesel still has a dirty cloud over it from past Diesels and with how California acts especially towards Truckers and Semi's its going to be hard to convince others that Diesel can be clean. If money was properly invested by other automakers like Toyota, Nissan, Chrysler and GM as well as Ford they too could have a clean Diesel car. Diesel engines unfortunately have a grimy filthy past and people can not forget. Much of it is that hurdle there which needs to be cleared.