OP, I'm not sure exactly why you would want to stay married to him when he very clearly doesn't give one shiny shit about you or your DC.
He is quite happy to repeatedly drunk drive, regardless of the law or the risk of causing a death, just because he finds it 'handy' to drive home from the pub......
He will, no doubt, also be quite happy to risk the lives of you and your DC too by drunk driving ! 
He is content to risk you marriage, his job, and your family's financial ruin and potential homelessness, just because he wants to !
And you want to stay with this bloody 'prince'

Report him again, and again until he's finally caught. Because it's either that, or live with either his or someone else's loved one's death on your conscience...............