I think that in early recovery when and if they are really working on themself then we (me too) should help them when needed and more importantly when asked to help.
I once complained here on SR about how inconvenient it was for me when my rah stopped keeping money ......but I was told if he ask/told me this is what he needed then I should go along because he knows if he can trust himself or not.............
I'm thinking it may be the same with the driving......if for now it helps him make it to the meeting and it helps him without hurting you then you should do it.
Just my opinion.