Searching the Museum of Contemporary Art of Australia online, I saw a similar photograph. Only taken in the daytime. At first, I assumed it had been captured using a drone. The large building the centre of the image is the museum. On the last day of my trip, I took a lift next to the train station. It took me up to the pedestrian walkway alongside the Cahill Expressway. Walking about 100 metres along it from above Circular Quay station. I ended up on a bridge right over George Street looking over The Rocks area of the city. Watching the cars moving below me I wanted to return at dusk. Due to the heavy highway traffic close behind me and the narrow walkway. It was hard to keep the camera still a long enough exposure time to capture the light trails from the traffic.