Wimpy's has a surprisingly varied menu and it's even licensed. But you probably come for the burgers. This isn't a fast food restaurant but sit down. Service is quick, however. Your burger and fries are served up quicker than Harvey's can slide one out.
I've found faux diner joints like Johnny Rockets to serve really substandard food. While I can't vouch for the rest of Wimpy's menu, the burger was surprisingly good. As you can see from the pictures, it's a kind of "double wide" patty nicely topped with onions and condiments. The fries were a bit of a let down. But the burger for sure would have me back.