Trentondog, Have you tried to offer something from the wild side?  Unless you try it you can’t say you will be laughed out of town.  Introduce people to something different, you might be surprised.  Try it as a sample and give a piece away for free.  You won’t know if it sells unless you try. 

Every item on my menu needs to be approved by my local health dept. I have tried to sell other items that are considered normal street cart fare, and they bombed out. For example, I drove to Long Island, NY to pick up several cases of Gabila’s potato knishes. These are a regional street cart favorite – well, at least in New York – but not in Trenton! I put up signs that we sold genuine Coney Island square knishes, I gave out samples, etc. Couldn’t move more than 5 or 6 a day. I kept them on the menu until I sold off stock, and never re-stocked. Another item that bombed was Philly style soft pretzels. This required a trip to the local “Philly Pretzel Factory” every morning to get fresh product – then have it not sell. So trust me, I know my customers. A rabbit n’ rattlesnake sausage might sell a few, so people could say they ate it – but I doubt people will be buying two of them a couple of times a week like they do with Chili dogs.
 
I own a hot dog cart, and I understand the limitations of the cart. It’s not about the old, worn out cliche of “thinking outside of the box”. I already thought “out of the box” when I started the business. I am the only licensed cart in my town. (along with a lot of food trucks)