Led to the Arlington Heights Road location by my friend Dan, who worked at another Johnny's as a teen, I was smitten by the beef and sausage combo. Order it "sweet and juicy" and prepare to be delighted.
What the fries lack in quality they make up in volume, and the ambience is really poor, but damn, that's one great sandwich.
Worth the drive to the suburbs. I'm salivating just thinking about it.