One big problem with panoramics is that any moving object could potentially appear multiple times in the same shot (I am totally guilty of this). With this picture, I thought that I was seeing double with the van, but upon closer inspection, they are two very different makes and models. As for the lady walking across the street -- yeah, she appears twice.
This photo was taken on Spadina Avenue, Toronto's Chinatown. You can view this in amazing detail here!