You will have to update your cartoon regarding refrigerants. R134a is already out as an automotive refrigerant, replaced by the highly flammable R1234yf since 2013.
2,3,3,3-Tetrafluoropropene, HFO-1234yf, is a hydrofluoroolefin (HFO) with molecular formula CH2=CFCF3. Its primary application is...