Alright, think beyond the United States. Across the world, there's a heck of a lot of engines. And I'd imagine a reasonable amount of them are diesels. Switch them to something that is cleaner, and you make a nice dent in the problem that is pollution. By doing these changes that require little or no change to infrastructure on the seller's end, you're going to get your foot in the door in more places.
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Alright, think beyond the United States. Across the world, there's a heck of a lot of engines. And I'd imagine a reasonable amount of them are diesels. Switch them to something that is cleaner, and you make a nice dent in the problem that is pollution. By doing these changes that require little or no change to infrastructure on the seller's end, you're going to get your foot in the door in more places.