That problem appears mostly solved these days. Household refrigerators and freezers now use propane. Many (most?) new vehicles now use 2,3,3,3-Tetrafluoropropen

That problem appears mostly solved these days. Household refrigerators and freezers now use propane. Many (most?) new vehicles now use 2,3,3,3-Tetrafluoropropene. https://en.wikipedia.org/wiki/Refrigerant#Refrigerants_with_very_low_climate_impact https://en.wikipedia.org/wiki/Refrigerant#Refrigerants_with_... https://en.wikipedia.org/wiki/2,3,3,3-Tetrafluoropropene https://en.wikipedia.org/wiki/2,3,3,3-Tetrafluoropropene