To each his own, but no thanks. If it were simply a case of getting help to your family quicker than yes, of course, but there are a lot more things that factor into my decision. It's almost as bad as OnStar. I am a LEO and I'm not very keen on the fact that LEOs can call and have OnStar shut your vehicle down or find you at will. Yes, can be handy with criminals etc., but it's little (a lot) too much Govt control for my liking. Freedom is pretty tough to get back once you've given it away like you're willing to do for a little extra "safety."
"A man who is willing to give up freedom for safety deserves neither." Quote is not directed at you, just at the concept of what you seem to be doing.
Then You COMPLETELY misunderstand how the E911 works in the 15-17 Expeditions.
It is in NO way Onstar. E911 does in no way give Ford or anybody the ability to remotely shut down your vehicle. Our vehicles do not have Cell modules built into them unless you have had the Remote Access(Old Ford Cell Based Remote Start) feature installed by the dealer. That doesn’t even have the ability to kill the ignition remotely like OnStars System does.
Sync Connect(Newer, Not 15-17) equipped vehicles do have a Cell module built in and have many of the more advanced features like vehicle location, oil age, Fuel level and other info available remotely. Those modules might in fact have the ability to remote kill a vehicle in the case of Emergency. OUR 15-17 Expeditions DO NOT have that module.
E911 in our vehicles uses your existing Cell phone, and the BT or direct cable connection(When CarPlay or Android Auto are active) to dial 911 if it senses a airbag deploy or a collision.
That in NO way gives Ford or anybody the ability to remotely kill your vehicle.
I am a Network Analyst and this is one of my areas of experience.
Do you carry a Cell phone? Then you are already capable of being found at will by LEO, but you should already know that.