Opening a Prius remotely

This is the second time I've received this email. I know it is not possible, but who thinks up this crap? Here is the context of the email.
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Who'd a thought this would work!!!!

Have you locked the keys in the car?
If you lock your keys in the car and the spare keys are home, call
someone at home on your cell phone and ask them to get your car keys.
Hold your cell phone about a foot from your car door and have the other
person at home press the unlock button on your keys while holding it near
the phone on their end.
Your car will unlock. It will save someone from having to drive your keys
to you. Distance is no object. You could be hu ndreds of miles away, and
if you can reach someone who has the remote" for your car, you can unlock
the
doors (or the trunk this way!)

Editor's Note * It works fine! We tried it out and it unlocked our car
over a cell phone each time we tried it.

 

I posted it to see if it has any validity. It sounds preposterous, but I DON'T know if it would work. Pardon my ignorance.