Yes, this is a classic. As I was noticing before, some things don't change in New York. The subway, we just saw that. But these street food shops have been the same for decades. Why ? Probably because this is a pragmatic country. Why change things that work ? And by the fact that they are now landmark of the city landscape, you don't want them to change. It would be very different in Paris for instance. If such shops were allowed in the streets, they would be either very modern, designed by one of those fashionable designers, or they would be deliberately "old style" like the merry go round at the bottom of the Eiffel tower. They would look tacky, because false. And they probably would change every few years, in order to comply to new regulations making them controlled by some crazy administration… But here, we are in New York, and we are happy to see these illuminated carts. I have to admit never having bought any food from them… and never liked the smell they exhale.