Makes you wonder what the MFGs use on "raised white letters" 'cuz they don't crack. I have no clue other than if you scrub them against a high curb, hard, only then does it seem to come off only because you've scrubbed the lettering removing the rubber.
My wife has done this numerous times in various cars in parking lots, Atm's, drive-thrus, etc. always cuts the curve a tad short.
Of course I've "never" done that, or any of you either