I live in Sacramento and have an electical cable that I can run out to where the carport is. So I could work at night on those swirl/scratch things with the proper lighting. There is a car wash area here but no electical outlet there. What I usually do is wash/dry there and bring car back to my carport, then run my electric cable to the car and do DA stuff, etc.
I do all my DA work under the carport and periodically move out to the sun to check my work as I go along. I put microscratches in finish last year by not checking progress of claying in sun. Could not see damage I was doing under carport. Now I know that you have to not only get in the sun, but check from 72 angles to see!!!!

Ah, the pain of perfectionism. Somehow I think you understand.
So that is the setup, my friend. Any recommendations on lighting set up and how powerful?