instead of all of that why not run a smaller fog machine with a thicker grade smoke coloring (the theater kind comes in many colors already) then run the tubing (piping) from your trunk to where eva on your car you want the smoke/fog to exit your car. its very simple and you'll get the same result without all that confusion you wrote b4. many people do that just go to a car show during a lighting comp. and ask around its mad easy to do