By Tobias Carroll It’s not uncommon to hear an especially well-designed or well-made car described as a work of art. That’s not the only place where the world of fine art and vehicular design come together; the Museum of Modern Art recently hosted Automania, a show dedicated to “[e]xamining automobiles as both modern industrial products and style icons.” And BMW’s Art Car program has sought out collaborations with a host of prominent artists — including Roy Lichtenstein, Jenny Holzer and David Hockney. Now, the Art Car program has added a new wrinkle: onetime Art Car participant Jeff Koons has…