What car is this?

http://www.hulu.com/search?query=Thunderbolt+And+Lightfoot&st=0  
I
 just saw this movie and there was much debate over the make of this car.  Granted the link is a dark picture, but at 1:30:24 and 1:35:33, there are some shots of this car.  If you could kindly take the time I'd be most grateful....... not to mention you would settle an argument. Thanks

Picture of What car is this?
IMDb forums say it's a 1951 Mercury.