$90 a gallon that covers about 25 square feet, so certainly not cheap. Might be good for the firewall or the van floor by the exhaust, etc. Would be interesting to see what the thermal rejection is, radiant or conduction, or both.
A friend of mine used a good amount of that stuff to insulate his van. He swears by it, says it has helped a lot in keeping the heat in, when he is in cold weather, as well as noise dampening.
Ceramic Thermal Insulation Coating
Linear Mode
