I've emailed photos for the listing of David Lynch's Blue Velvet.

http://www.imcdb.org/movie_90756-Blue-Velvet.html

1968 Dodge Charger (3 star)
http://www.imcdb.org/vehicle_2069-Dodge-Charger-1968.html
photo: bluevelvet_68charger.jpg

Unidentified Convertible (4 star)
photo: bluevelvet_convert.jpg

Unidentified Firetruck (1 star)
photo: bluevelvet_firetruck.jpg

Unidentified Greencar (1 star)
photo: bluevelvet_greencar.jpg

Unidentified Orange Pickup (1 star)
photo: bluevelvet_orangepu.jpg

Chevy Police Cruiser (1 star)
photo: bluevelvet_police.jpg

the "unidentified convertible (4 star)..closest i've found is a 1973 Oldsmobile Delta 88 ('72 had different headlights, '74 had a different grill).