Hudson Urban Bicycles is an American custom bicycle builder located in the West Village (New York City). They make these really COOL rear load cargo tricycles for carrying kids. The NY Times did a video interview of the owner talking about his design. If you’re in NYC, definitely check them out.
BTW: The mom in the photo driving the cargo tricycle is the actress Kate Winslet from the movie Titanic. Couldn’t ask for a better endorsement.