It's great to see so many classic cars on screen. One petty critique I have with period films like this is that, with a couple of exceptions, all the cars look like they've been brought in from the local car club. That is, most of the cars, as far as they eye can see, look brand spanking new regardless of age. My memory from that era is that there were a lot of shoddy and dinged up cars. I realize producers have to take what they can get, but I know if they tried a little harder they could find more dull sedans and unpopular cars that would be more period correct. Picky, I know, but as much as I like to see the cars, I'm almost distracted by the shine.
Edit: The weathered patina of the '63 Chevy is exactly the look I would want to see. Unfortunately, considering the year, that would be the one car that should look brand spankin' new.