Unfortunately I give it about 5 car washes before it starts fading/peeling/rubbing off. I doubt that stuff is any better than what they use on kids' toys these days.
I might actually take that bet if'n I wasnt a cheap cuss. LOL
My Honda VTX1300 motorcycle had a LOT of plastichrome...headlight bucket, side covers, lower side covers, air cleaner cover, speedo bezel, spark plug/engine covers........and more.
When I bought the bike I assumed it was all metal or pot metal, chromed....when I got it home I found it was plastic and felt sort of jipped. Well, had that bike for 7 years and about 70k miles.......rode it every day in all sorts of weather including snow and salty conditions (I am a year round rider). And the chrome looked pristine, save for any scratches I put onto it. My "new" bike, a Honda VTX1800 this time, has less plastic but still has some.
If what you saw was the same stuff, it will probably outlast regular chrome.