This says 1969 https://scholarlycommons.law.case.edu/cgi/viewcontent.cgi?article=2549&context=caselrev#:~:text=For%20cars%20manufactured%20after%201969,windshi

This says 1969 https://scholarlycommons.law.case.edu/cgi/viewcontent.cgi?article=2549&context=caselrev#:~:text=For%20cars%20manufactured%20after%201969,windshield%2C%20from%20outside%20the%20vehicle. https://scholarlycommons.law.case.edu/cgi/viewcontent.cgi?ar...