It's tough on all sides it sounds like. I think it is a huge step to apologize.

On top of not wanting to see neighbor kids hurt, there's the consequential side of reckless driving. The legal side. One of my mom's friends has a son my age. When he was in his early 20's he sped out of a parking lot and caused an accident. He went to jail for 5 years for manslaughter. It was tough on them as a family to have their son/brother incarcerated.

Edit: I want to say this. I sometimes tell my children that their behavior makes it difficult for me to be the mother that I want to be. I love them, I drive myself hard to create a home that has love and respect. But they are human too with emotions of their own. I can't control my environment completely because of their different personalities/triggers/exhaustion limits.

As a parent there's a saying...don't feel ashamed for discipline" goes with minding ones tongue and showing love and sewing seeds...