I also have purchased Ford's ESP plan(s) in the past.
An important thing to remember (or know) is that when you sell the vehicle, you are entitled to the remainder of the warranty time (prorated) in dollars back.
That's right, a check back for warranty time/mileage unused.

You must send a WRITTEN request and a check will be sent to you.

I have done this twice with two Ford ESP plans.
Get out your contract and read the fine print.

08FEH