Originally Posted by
IAHtraveler
Any that I've ever seen are "once in a lifetime" match (a.k.a. really once per your account number). I doubt they'll just keep matching you if you don't earn status but keep renting with Hertz and asking for a match.
I don't know how true that is for rental cars - I've matched from Hertz to National multiple years in a row with no indication of there being any limit. Not sure about Hertz.