Please, don't do it. It's not even worth $50, IMO. I've expressed my displeasure at Hertz in the past, but I noticed NO difference in car quality, upgrades, etc., between my 5* rentals and my PC rentals. PC is a pretty tough level to achieve, and I really don't feel like I received any love from Hertz in return. That's why I intentionally split my rentals this year b/t Hertz and National, to achieve 5* and Exec Selection.