Hi KJ,
I did a lot of things for my son that he could have been doing himself...I can see that now looking back.
My current rule of thumb is:
Do you resent having to drive him? If so, then it most likely will come back to haunt the both of you. Speaking for myself my resentments had a way of simmering just below the surface until the big kaboom!
Do you thing its possible that "you" feel ok driving because "you" see his efforts and know where he is?
Do you think its possible that "he" likes having you drive because "he" then knows where you are?
My son became a very manipulative person when he became an addict. And it stayed with him for quite a while after he quit using. It just came so naturally to him at that point. Through time (away from drugs) that personaity trait began to disappear. I was just one small step behind him in my manipulation tactics. I still work on that today.
So...I suppose the answer is..."what do YOU want to do?"
Wishing you and he the best paths
((((hugs))))
Cece