Reading the original article as linked to Motorious, note that "the study" is only one study. Easy to pick and choose your references, and even easier to apply that one study to the world in general. Both are flagrantly poor ideas.
And as "classic" cars (whatever that really means) are driven fewer miles per year than modern cars, and much much fewer miles per year than today's electric vehicles, seems the apples to oranges idea is very very true here!
On a related tack, the opening paragraph of the Yahoo article describes a lot of folks these days!
"Usually their eyes are bugging out, spittle’s flying out of their mouth, and they’re absolutely filled with self-righteousness but few facts."
yeesh