It might demand greater production, but the higher efficiencies of diesel engines would mean less of what was refined would be needed for transportation (admitt

It might demand greater production, but the higher efficiencies of diesel engines would mean less of what was refined would be needed for transportation (admittedly not perfect). And we would have to find something to do with all that surplus gasoline... which makes biofuels look more appealing (I run B50 or B99 in my VW, depending on the season), or better yet, using solar power to synthesize diesel fuel.