For something like $150 to $250 depending on the size of your car or pickup truck, Buskey's Auto Repair, 89 Main St, Ashland NH will undercoat it using
www.woolwaxusa.com
This stuff supposedly will stick to it and last a long long long time ........ so go to BUSKEY'S to get it WOOL-WAXED with Wool Wax lanolin undercoat ...... the good stuff! .... a wool grease coating on raw sheep wool which will make your car say ......"NOT TOO BAAAAAAaaaaaaaaaaD ..... that Wool Wax!"