The recent "True Jackson: VP" episode "True Drive" contains an early-1970's full-size GM Sedan, that's supposed to be from 1971, and has had a missing windshield since 1973. I don't know if I'm going to get that or not, but it's still a good tip. I am going to try to capture some more cars from Marathon Man before I send it back to Netflix and get my copy of Easy A this week.