Well, you can't actually access the rooftops and run across them, like Nicholas Tse, Wu Jing and Philip Ng, and they're not quite on Street View, but you can clearly see that a lot of the chase takes place on the rooftops in the block between Ka Shin Street, Pok Man Street and Tai Kok Tsui Road, with the Mong Kok Ambulance Depot and New Kowloon Plaza clearly visible.