The other point he makes that I find very important and true. If you do your own maintenance and as many repairs as you can handle, you not only learn more but you are far better disposed to figuring out an emergency should it happen on the road, a diagnostic in the workshop, or "feeling" an issue long before it detonates.

The cheque book owner has no idea simply because he or she isn't the one maintaining the car and thereby knowing foibles and nuance, seeing potential trouble spots, feeling loose bits, none of that.

You cannot be one with your steed if your man feeds, waters, and brushes him.