I know it hurts, but take focus off of him and put it on HIM - the Lord above!
I know you needed to know about the car, but do you really think in the end he will be happy? He WILL have to pay you child support until your babies are 18. He will not be happy. What he doesn't understand is that at some point - once a cheater always a cheater. He cheat on you, he will cheat on her too. She got involved with a M man already, what's to stop her from doing it again? You know he did such a good job on his first M - why not do it again right away? You are smart enough to see that this is garbage and your H has lost it. You don't want him in your life right now! The cycle is endless and they will never see it. That is why detaching from that is the best you can do.
I want you to do something. Make your next post a brainstorm list. Just starting typing a list of things you have always wanted to do - no matter how big or small - no matter what area of your life :career, schooling, vacations, activities, etc. Don't qualify anything, just let the ideas flow onto the board. I would like to look at your list...