At first this looked like one of those tourist go-carts that takes you on a self-directed tour throughout the city (Anyone ever been on one of those by the way? What are they like?), but closer inspection revealed that this pair was actually pedaling their craft down the street, as if they had appropriated one of the Stow Lake paddle boats for concrete usage.
Speaking of Stow Lake paddle boats, anyone ever been on one of those before? What are they like?