Assuming I am alone, there are emergency roadside phone every mile or so that I can use. Alternatively, I can use a normal landline or flag down a passing state trooper. I don't see this as an issue, as it will happen at most a handful of times in my life.
If I need a ride home after city buses have stopped, I can call a cab or I can stay the night. Again, is this really a problem? Did people never leave home before cell phones?
Why do you need to phone someone when you show up at their apartment? Why not use the buzzer or knock on the door? If this is a case where the apartment doesn't have doors or buzzers, I can send them a message when I leave home, "hey, I'll be there in 15 minutes."
You came up with three exceptionally weak circumstances where a cell phone might be a bit more convenient if you have managed to not plan anything you're doing.
Again, folks assuming that day-to-day life is impossible without a cell phone.