A frequent renter program that lets you bank points instead of "free rentals". I like getting Hertz points because I think they are actually fairly valuable and you can save them up for a sweet rental like a vette or prestige car. Avis's program is just too hard to really take advantage of for longer trips. Free weekends that expire just don't cut it for me.

Does Enterprise even have a frequent renter program other than airline miles? I figure I have enough airline and hotel miles to do whatever I want, so the last piece to make a vacation free is the car - which hertz can help me with even if it's a 7 day trip.