I felt it was more important for me to know the truth of his drinking, know when he is over the limit to drive me anywhere etc.
Ha! it's been YEARS since I've allowed him to drive when we go anywhere together. I do not CARE whether he's been recently drinking or not. He will NOT drive when I am a passenger. And he accepts that too, he gets to see the scenery for a change, and he doesn't have to deal with me being all tense and nervous and 'watch out!' on him.