Logically speaking, it had to happen--
Bck in the 60s there was "Stock Eliminator" when guys started doing things to make 'em just a bit faster, there was Super Stock. When the factories jumped in, they had a whole corporation to draw from, they went nuts & you had "Factory Experimental"--cars that eventually became Funny Cars as few if any parts on them were availible to the "average guy.
Now you have 85-100k dollar factory racecars masqurading as "stock" running S/C or S/G times that only the rich guys can play with & the factories support 'em........AMAZING! History DOES repeat itself.......