Some related articles:
"Food cart showdown: More than 60 carts vying for downtown vending spots" Isthmus November 2, 2017
"Cart czar: New street vending coordinator Meghan Blake-Horst sees a 'perfect storm' of opportunity" Isthmus February 9, 2017
"The city of Madison needs to embrace innovation in its food cart scene" Isthmus November 25, 2016.
Because I almost always eat at home or stuff I bring from there, I rarely eat at food carts. One of my favorites when I do try one is the huge avocado spring roll sold for $3 by Luang Prabang on Library Mall.
During warm weather, food carts and trucks can also set up at some recreation sites in neighborhoods throughout the city, such as by a soccer field north of Sequoya Library early on Tuesday evenings.