Anger is tough. I think we all get it at times especially near the beginning (and even though it's been a year and you've already D, it's still near the beginning). It's easy to say "just worry about the things you can control" but it's harder to do in practice I know. I don't remember if you're in IC, maybe that could help give you some ways to work through it. Also as discussed above maybe just doing pick up/drop off at a public place for a while could be helpful, just so you don't have to see the "one big happy family" in your face. I agree with Steve that public car switching is not going to be an issue for the kids. Above all, I do think things will dissipate with time.
On the bright side, it sounds like you're definitely killing it with the other parts of your life and time with kids, so you should feel good about that.
Me: 43 W: 41 Together 2009, Married 2011 Sons 10 and 6, Daughter 5 Bomb 2/21/21. W moved out 10/2021