The life of the street cart vendor is understandably hard; if they're not tumbling and tussling with each other for real estate, then they're probably trying to hold it in. Here's another notch for their hardship post: according to the Post, some food vendors have been forced to sleep in their carts, so as to not lose prime spots on the street.
Vendors say that employees are paid to watch the wagons in the evenings, as well as do some "icky" cleaning. But the Department of Health dictates that food vendors clear the streets after closing, then go to a commissary where the carts are washed and stored. But in the street cart-eat-street cart world, sometimes you're forced into untenable situations; it's like choosing between Mountain Dew and Crab Juice.