In spite of the condition of my PC, I was able to add over a dozen vehicles from this title:
http://www.imcdb.org/movie_69919-Cops-and-Robbers.html
And I've got supplemental images once they're approved. The only thing I haven't got are some cars in a chase scene, and the ones from the Apollo 11 Parade scenes.

If we're already at 500,000, this should send it a lot higher.