on the floor, roof anywhere that needs insulation from heat mainlysound is not really a problem
You are absolutely wasting your time and money insulating your vehicleEspecially if the insulation isn't missingI would suggest tinting your windows to the legal limit and using a sun shield on your windshield when it it parkedDoing anything more than that is laughable.
Silver is not very active neither is Cu the rest are very active and will produce Hydrogen when added to an acid
