I just recently joined Costco to take advantage of the car rental program based on all of the great TUG reviews. Usually when I rent a car, it is for business, and our company uses Hertz so I belong to the Number 1 gold program and get to skip the line. My upcoming Costco rentals are with Budget and Enterprise. Budget has an express pick up program that I can join, but I am wondering if any TUGers have experience using these programs with Costco. It looks like it may not be easy as Costco doesn't ask for this info as part of your profile. Any advice on the topic will be appreciated.