It came from here: http://www.gaspig.com/

(Duh, Jim, it's in the page source.)

I was just struck by the Volvo irony since I had just come from being stuck behind one of these: Volvo XC90

It is, of course, "The first SUV with a conscience."

Wonder what that pic would look like with *this* Volvo parked next to its big, black FoMoCo sibling.