There is a variety of diners, sports bars, and restaurants named Cadillac Jack's. I don't know if they are all part of the same chain.
Student or Learner
Sometimes, I see in the American movies diner signs with "Cadillac Jacks" written. Is it a chain of road restaurants? A brand?
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See Cadillac Jack's Sports Bar - Page
As you see, it's an actual franchise. I don't know whether the Cadillac Jack the OP mentions having seen in movies resembles it at all or not, but there it is.
Please be aware that I'm neither a native English speaker nor a teacher.
Thanks for the answers.
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