Zipcar's cancellation policy --occasional driving membership plan

I have been a Zipcar member since December of 2010.  Given I needed access to car, on average, once a month; I opted for Occasional Driving Membership plan.  In this schema, I paid a one time admin fee, and an annual fee.  Under this plan, I had the flexibility to rent as needed.

It worked well.

Life circumstances change, however. For us buying a hybrid car has made the convenience of being a member of car sharing program redundant.

I searched the Zipcar web site for membership cancellation information.  This is not mentioned under the "help".  But, type "cancellation" in the "Ask a question box", and you get

We're sorry to see you go!  To cancel your membership, please give us a call below.
Call 1-866-4ZIPCAR

I called today, and here is the scoop.  Two things should be in place for a full membership refund to occur:
  a.  No reservation should have been made, and used in the current membership year
  b.  Cancellation should occur less than 30 days after the membership renewal  date

So, I still enjoy carrying my Zipcar membership around, at least for a few more months!