I came across this earlier today via FlyerTalk (H/T Oliver2002).

If you are a Miles & More Senator, Hertz will reward your SEN status with President Circle level in their Gold Plus Rewards program.

If you are already a Hertz Gold Plus Rewards member, you simply need to update your profile with CDP Code 501032.   If you are not a member, simply sign up and during the enrollment process it asks if you have a ‘CDP’ code.    Enter the code and complete your enrollment.  In a few days your profile should reflect President Circle status.

Typically it takes 20 rentals a year to qualify for President Circle so this is opportunity should not be missed.   As a President Circle member you will be entitled to a guaranteed free upgrade to the next level car (based on your reservation) and guaranteed availability of a car when you need one.

BUT HURRY!  THIS DEAL EXPIRES AT MIDNIGHT TONIGHT, OCTOBER 31, 2016.