One of my dad's friends had a brand new late 60s GTO. I think it was a 67. I remember getting a ride in that monster. He could light up the tires (bias ply) at any speed. My parents had a 1967 Oldsmobile Delta 88 with a "little" 425 engine. My older brother and the son of the guy with the GTO did a few burnout contests. (Dad's were not consulted) The GTO won with the locker rear end it would smoke both rear tires. The Delta 88 just had a peg leg.
My parents tried to sell that Delta 88 in the very early 1980s. They had no offers even at $150. They finally called the scrap man and sold it for scrap.
They were just ordinary cars used for transportation when gas was 20 cents per gallon.