It's your business, you told him what you were going to do, so do it.
You have to decide if you want to drive the car or sit in the back seat.
No child should be subjected to this toxic lifestyle. Children are affected all in a
negative way when exposed to abuse and addiction. They carry their childhood into
adulthood, your child has already inherited the gene that predisposes them to addiction.
To me, that quite enough to deal with...I know, I am one of those children, both of my parents were alcoholics, my mother is 86 and still slamming them down...my childhood was pure h@ll, I wish that on no innocent child.
Be the responsible one, protect your child.....at all costs.