Dining Out Magazine
Next door to the Northwestern Famous cart on Broadway by Columbia University is Kungfu Express, a cart run by a woman from Henan.
I asked for some guidance as to what I should get, and sure enough, she steers me toward the Henan-from-Xinjiang favorite dà pán jī, listed as "chicken over rice" (大盘鸡盖饭 - dà pán jī gài fàn , or over handmade wide noodles, if you prefer) on the posted menu. Of course, it's impossible with a cart to make each order on the spot like they do at HeNan Feng Wei, but she scoops up a creditable version from a waiting pot: chunks of chicken stewed with potatoes, tree ear fungus, and just enough red pepper and spices to be interesting but not overwhelming.
She also does some nice grilled skewers - over charcoal, no less! The Chinese sausage (烤香肠 - kǎo xiāng cháng) was delicious - sweet, with a bit more complexity of flavor than most Chinese sausages - and a chicken skewer I saw looked quite good - not the usual tiny chunks of meat.
Kungfu Express cart
Broadway, east side, @ 117th St., New York 10027
(1 train to 116th St.)