Another "pic in the park", possibly High Park. You can just make out the front of the escort vehicle needed to shepperd the bus along the King's highways without the benefit of license plates. GCL must have liked the five PDA-3702s (1200-1204) because they bought another twenty of the similar model PDA-3703 (1450-1469) three years later.

TTC photo, Alan Gryfe collection.