The Hertz rental car company has a loyalty program called Gold Plus Rewards, You earn points for each rental, which can be redeemed for future rentals.
A note on my account statement says:
Points do not expire if you have Hertz Gold Plus Rewards rental activity in the prior 18 months. Reservations must be closed by [date] to prevent points from expiring. Activity means a Gold Plus Rewards point was either earned or redeemed on the rental.
However, I have no need to rent a car, either with money or points, before the expiration date. Are there any other lesser-known ways to earn, redeem, or otherwise preserve my points past the expiration date?
(I know the wording makes it sound like there aren't, but many loyalty programs have loopholes that let you do this; e.g. with many airline loyalty programs, you can keep all your miles from expiring by donating just a few to charity.)
I am in the US, if it makes a difference.