How does an old pinup sell fuel efficiency?

While we’re in the mood to fact-check sight gags, I thought I’d go ahead and take umbrage with this Italian ad for Goodyear. (See the full ad here.) My beef is twofold. One, outside of oil and gasoline, there’s not much that gets replaced on a truck more often than tires. That alone makes the premise of this ad seem pretty preposterous. But then there’s my second concern, which is about the whole point of the ad.