Point granted, we use asphalt because it's a cheap and I should know better. I would still expect it to last longer than wildly complicated solar panel/computer/light displays that have many more modes of failure.

For this to work you have to do several things to the glass at the same time, none of which come easy: make it strong, make it hard (probably need to get to 8 or 9 on Moh's hardness scale), make it tough, and have it grip rubber as well as asphalt does even when it's wet. Considering scratch resistant and grippy compete with eachother this is not looking hopeful.