@berks This is not your fault. It is totally on him. I wanted to let you know though that from personal experience, someone being banned from driving (especially with no notice) has a big impact on your life, much more so than if they had never driven or had a car.
I wasn't banned for drink driving but had to surrender my licence with no notice as I'm an epileptic and had a seizure out of the blue - when it had been controlled and I had driven for over 20 years (nocturnal epilepsy so it wouldn't have happened at the wheel and I was allowed to drive, but you always have to have been seizure free for over one year)
The impact on our family has been huge (and I know this is a first world problem but I have a disability so it is especially awkward) and believe me if I had caused all this through my own fault, I think DH would have left me, as much as we love each other, for the fucking stupidly and selfish irresponsibility causing the whole family so much stress and upset.
Deliberately risking people's lives (including other people's children) as well as risking his own and leaving you widowed and your DC without their dad.
Having to tell his boss. Possibly it being in the local press. Having to tell all your friends and family. If my friend or family member had done this I would not be able to get past it, knowing my nephew was killed by a drink driver and his family destroyed. Perhaps your friends and family will be in the same boat and want no contact with him. Your DC will know what he has done.
Even without that, especially when you have DC, becoming the sole chauffeur for everyone including your selfish stupid DH is a big fucking pain in the arse. Nipping to the shops as you have no bread. DC has a party nowhere near public transport. Parents evening. DC has a play date nowhere near transport. Having a hospital appointment in the middle of the day and having to get back to work or the school run and public transport won't get you there in time. Getting a call from school your DC is sick and you have to collect them immediately. You having to do all this or the money for taxis coming out of your household budget (and they are not cheap). You want to go on holiday or you want a day out. You're doing all the driving.
And this is without the court case, fine, criminal record which will affect a number of things even including house and contents insurance, applying for jobs, everything.
How do you feel about your marriage in light of all this? I worry you would have so much resentment and anger, not just today when it's a big shock, but the lasting effects on you and your DC for all the reasons above. He has been horrifically selfish and stupid and it may be beyond your forgiveness so it may be worth planning for that.
I'm sorry for your stress not just with dealing with the practicalities but knowing you DH could do this to you and your DC.