I was going through my trunk and realized that under the carpet is some cancer. I was wondering if anyone has ever thought of lining their trunk with one of those spray on bed liners like rhino lining. now, I would not spray it on the gas tank and would make a make shift wall for the read of the back seat out of sheet aluminum but it would keep it from rusting and would it help for sound dampening? anyone have ideas on why this would be a bad idea?