You taught me something!  I think of a barrow as having one wheel.    I checked into the word, however, and it is possible for a barrow to have two.  (In the U.S. we say "wheelbarrow", and I don't recall seeing a wheelbarrow with more than one wheel.  The dictionary implied that most have one, but it's possible to have a wheelbarrow with two wheels.)  When a barrow has two wheels, it's also called a "pushcart".  Yes, I see Desmond as pushing his "barrow" or "pushcart" from his home to the marketplace (note I used one word and not two).