While it is clear that taste is subjective - one can't argue that this street food you talk of is good for you. There is just no way it would not if you get to live for multiple centuries cooking it.
I used to hit up a street cart years ago for fresh crepes. Delish. They made them with various options...pesto, cheese, Nutella. There were some other choices too, I think. Good stuff.
I'm definitely heavily in favour of the concept of street carts and street food. I just don't see them much.
I don't recall pesto, but it wouldn't surprise me. I got nutella and banana. I know they have many different cheeses from multiple animals i'm sure. feta first coming to mind...