Awesome build.
Just read through from the beginning.
I have only one daughter but...
Years ago I turned and "merged" quickly into a busy highway. Dakota R/T so she was in front seat. She was around 7 at the time. When up to speed I look over at her. She had on a big smile and just said "More".
Doesn't wrench on them but is involved with the cleaning and the attended shows.
Great to see your son involved.