Who knows, might be as simple as not enough volume. With many newer factory hot rods like the Mustangs which are already available, and many classics being sort of trailer queens, or guys like me who could never afford such a luxury, this just HAS to be a somewhat limited market.
And, as I've pointed out before, "There's more than one way to skin a cat."
Why you would want to is beyond me. Skin a cat, that is