For several reasons, I don’t think GM would run an ad like this nowadays. But the claim alone is a bit suspect. “More people buy used Chevrolets, Pontiacs, Oldsmobiles, Buicks and Cadillacs than any other kind of used cars”. Hmm. I assume that must mean all of those brands collectively, which it certainly doesn’t exactly imply. No doubt more used Fords were sold than used Oldsmobiles, especially the slow-selling Toronado. Undoubtedly even more used Thunderbirds were sold than it.
But it makes for a nice load of used GM cars.