system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do older vehicles have a blue stripe across the top of the front windshield, but newer vehicles don't?
gpt
I work with windshields daily, to repair them. It's a coating against sunrays and heat. Modern cars have this coating integrated into the wind shield giving the entire glass a slight greenish or purple tint. It's less noticable but its still there.