As a purchasing agent for fleets, back in the '70s, I can remember actually having to pay a (not insubstantial) premium ($150) as an "option delete", in order to request NO A/C in the Electra Wagons. This was, of course, very rare indeed, as the operator could easily and simply avoid activating the A/C, using the multi-function controller for HVAC functions. The Electra was the top-of-the-line Buick model, on Buick's largest car. Buick's own, in-house, 455 C.I. V-8, with Turbo-Hydramatic 400 transmission, produced enormous torque, if not horsepower, motivating this 5000 lb car. Beauty meets brute force in this particular vehicle ! The rear brake light treatment was unique to this year, I believe. Very pretty indeed !