Joseph Oberlander said:

That is exceedingly dumb. That's like saying gasoline is widely used
because people don't know you can buy a diesel automobile.

That actually is true as well. Most people don't.

I've never met a single adult in this country who believed there are
no diesel automobiles. I believe you're pulling this claim from a
sunshine-free zone.

Take the new
Toyota Pruis. The VW Golf with the TDI engine gets better mileage.
Better in fact, than a Geo Metro did - but it was never marketed as
the highest MPG vehicle in the U.S.

Why are you changing the subject? Do you think the few people who buy
diesel cars do so for the gas mileage? Do you really not know what the
big impediment is for most of us who don't buy diesel cars?

They sold a LOT of Geo Metros with that "highest MPG in the U.S."
claim, despite it being completely false.

You're lost in the deluge again. Enjoy your rant.