Thanks everyone. The picture was taken in Zurich from my hotel balcony which overlooked a tram stop. If memory serves me right it was about a 1 second exposure, with a tripod (naturally) and set the white point for the scene was set from the back of a brochure in the bedroom.
So many great pictures this time round. I loved BA's fire pic, but ACID, sun, alisdairm's were awesome as well.