Corrected entry: Throughout the movie, everyone seems to know that Starman and Jenny are driving a 1977 Mustang - Mustangs in that era were nearly identical from 1974-1977, it is highly doubtful anyone could immediately identify that car as a 1977 Mustang just from a quick glimpse.
rstill
14th Nov 2004
Starman (1984)
Correction: This particular trim was only offered this one year.
Correction: It is likely the cops captured the license plate number and got the exact model off the plate's registration records. That info would take an average policeman about 5 seconds to find out just by calling the plate number in on his radio.
rstill