stopped selling it and changed to some other brand with a bottle that looks just like Brite Boy but the formula must be different because it doesn't work anywhere as well. You can still get Brite Boy but you have to look a little harder for it. Flitz works pretty well also but is more expensive. I keep it around to polish all the plastic hatches and instruments as it does wonders for them. I've never tried to seal it with car polish. I'm not sure if the car polish would be any better or not. It seems that any protection put on by the original polish would be removed when you put on the car polish so I'm not sure you would be gaining much for all the extra effort.