That would be added income on classic cars,they redo everything but the glass. I did a yellow nomad on Thursday it had a scratch in the upper right corner,I suggested removing with that system.Being he owns a body shop he told me the heat generated by polishing would explode the glass,I don't know if that's true or not he has the glass pads but afraid to use it,and I sure wasn't gonna try.Im gonna look into this,nice review thanks.