That's interesting. I wonder how that will affect the car on a hot day?
Will it cause more heat (as the material is designed to encourage the conversion of light into heat)?
Or will it reduce the heat (as most of the easily convertible wavelengths get converted on the surface of the car, not on the dashboard)?
Or (as I suspect) will it have next to no effect either way?
But nobody should trust my math in those matters (because I didn't do any)