Rural roads. Now lets see.......................
Head on collision speeds at 120mph. Assuming both vehicles are doing 60 MPH so that is not good.
Not a lot of run off at times. A giant oak tree or dry stone wall are not the best things to hit.
But really.........
You would struggle with the "golden hour" where you really need to get to A&E. If you end up in a ditch there is a good chance that nobody will find you for a while so your chances of surviving are reduced. Even if someone sees you, by the time they called 999 (assuming you have a phone signal) and an ambulance comes you may have been laying there for a long while.
I would like to see a map the accidents in relation to the nearest A&E hospital.
Sometimes there is just nothing that can be done. That's life (sic).