John, I looked at it too about 10 years ago. The problem is that it requires 10 times the labor and for what purpose? So that you can pay $30 for a gallon of paint vs $150 for a gallon kit of single stage urethane automotive paint?
If you shop you can get a decent paint job for not a lot of money, especially if you do your own prep work.
I had my Porsche 928 painted for under $1000 in base / clear using a color for the base and a high solid clear of my choice.
https://scontent-dfw1-1.xx.fbcdn.net/hphotos-frc3/v/t1.0-9/10410815_10155180422425165_2555673139134141653_n.jpg?oh=f3a943960d7e0e1e9f190a2aa2114650&oe=569F7300I've painted cars myself and while I love the idea, I can't seem to get as good a finish as a pro that paints cars every day. I just learned that this is the kind of job that I would prefer to farm out.
I won't pay $7000 for a paint job, but I won't do it myself either.
With best regards
Al