I would offer an example that is a bit off topic, but I think shows well the way things go. I was first exposed to "plastic" grocery bags in 1983 on a trip to Asia, I had never seen one before that. Now those same grocery bags are the norm here. Likewise I have seen many more diesel vehicles than gas ones in the past several years on subsequent trips to the East. I think that the US needs to be dragged kicking and screaming into every change that occurs and eventually we will follow the rest of the world when it comes to clean high mileage diesels. It almost like we are the backward country.....

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'83 300D (220000 miles and counting)