We are not talking about ozone-depleting gases, but short term global warming causing gases.

CFCs were successful because they are incredibly safe. HFCs are about as safe as CFCs. Now, if every car started to carry something as dangerous as a propane tank, we could expect a lot of people to die (some cars currently do carry propane tanks, and they are less safe because of it).

Anyway, this thing is certainly not as dangerous as propane, or we'd have reliable data by now. The question is, how well tested is it (are there unbiased 3rd party tests?), and how dangerous are we willing to go? (And that F-O link is usually nasty.)

Yes yes, propane is so dangerous in cars. There are about 3mil LPG cars in Poland right now. I dont remember a SINGLE case of a TV report about LPG car blowing up (= non news). I had to google to find out how often that happens and what are the ramifications.

I found people with charred mustaches, first degree hand burns, all from _catastrophic_ gas leak followed by flash explosion inside the cabin. Example video clip: http://motoryzacja.interia.pl/wiadomosci/ciekawostki/news-ta...

Stats: LPG ignition is 8 times _less likely_ than regular gas fire in case of a leak.

so dangerous ...

You're contradicting yourself

How exactly? There are plentiful examples of people burning alive in gasoline fire explosion, yet LPG ones merely manage to burn hair.

This is new though: "While cars, obviously, contain other flammable materials, he was specifically worried that at high temperatures 1234yf emitted hydrogen fluoride, which is dangerous if inhaled or touched." Nasty stuff.

and your fridge probably uses less than the 4 ozs (~114 grams) that this commercial one does. https://www.youtube.com/watch?v=nc08R8Z7oBs&feature=youtu.be... It's pretty much a drop in replacement for R134a and according to unnamed rock crawlers (jeep folks) it just may work better