I have driven I95 from Florida to NY by myself. It is a scary, yet boring hypnotic highway. I shall not do that again, based on my own experience. Cannot imagine what steps I would have taken if I had noticed a car in trouble. Probably, exactly what Mr. Rodgers did. In that state of fear, I would have had to pull off in order to make a cell call. And then you never know what might jump out of the woods/swamps.
My familiarity with mile markers would have helped, but as astute posters have noted, 70 mph makes those markers move rapidly.
The inquiry will be interesting, but not very comforting to the family. I hope the Guay family never reads this thread.
Condolences on your friend's passing.
Do you know if anyone has done the analysis of the location data given by the 911 caller to see how far off he was to the actual location?