My reason for tinted windows in my car, truck and 37 coupe has nothing to do due with the gasser style, looks or weigh. In my opinion it is better driving with the sun directly in your face is not just an annoyance it can be deadly. Tint shields my eyes and prevent glare from extreme light. It helps guard my personal privacy. It protects the thing inside my car when I am not around. No more stashing my valuables out of sight. Tint keeps my car interior for getting to hot to warp, fade or crack in this Texas sun. In an event of an accident the tint helps to keep the car window form shattering upon impact. The right tint can reduce the heat inside your car. I do recall using a spray can of tint on my 68 Barracuda. I remember spraying at the top until a big run developed across the top of the glass and you kept adding to it as it rolled down the inside of the glass. I do not remember the year the first glass tinting film came out.