1. A familiar view - the tram rails are already quite rusty.
2 & 3. The rotary converter (2) and the Paxman diesel engine (3) are still available for emergency use in the event of a high voltage power failure.
I acted as 'member in charge' for mid-week running a number of times in the early 70s. One of my duties was to start the motor generator and then switch on the power. Sheffield 264 and Glasgow 812 were reserved for mid-week and getting them out of the depot would entail climbing onto 812's roof to attach the 'jumper cable'. A different world!