This is such a sad thought.
I would not hesitate to jump in my car and go where I was needed for them. I would cry & pray all the way to the hospital (if that is where this scenario takes place). I would sit by their bedside until the moment they did not need me anymore. And, I would try to never fight with my BFF again. Now, everyone DRIVE SAFELY!!! I am knocking on wood right now!!!! =)