quote: "Simply because" it burns as clean as gasoline? You missed where he pointed out that diesels were also more efficient.
quote: That said, diesel is refined from the same petroleum as I understand it and, therefore, it's not a substitute. More demand for it doesn't make things more or less green because the other refined products WILL be used.
quote: That's also why reusable shopping bags aren't "green" in any way, shape or form. The plastic is a BYPRODUCT of oil production.