When I was younger, I owned a 1973 Oldsmobile Cutlass Supreme. It was a beautiful car: deep red with a black vinyl roof (remember those?) and a black vinyl interior that was alternately skin-searingly hot in the summer and as cold as ice in the winter. The “Rocket 350” engine with its 4-barrel carburetor always ran great — and probably delivered somewhere between 10-12 miles per gallon (I never calculated it).
I remember the car’s air conditioning breaking down one summer, and with that black top and those black seats, a/c was a necessity in the car. So, being reasonably young and dumb, I went up to the local K-Mart and bought a can of Freon to recharge the system.