Hyundai window-tinting tech could save more energy in summer heat

Hyundai Nano Cooling Film window tint tested in Lahore, PakistanHyundai has developed a window tint that the automaker claims can help keep interiors cooler—and thus save energy normally used for air conditioning. Unlike materials that simply darken windows, and reduce outward visibility, Hyundai states in a press release that its Nano Cooling Film reduces interior temperatures by specifically blocking...