Model railways have changed a bit since my childhood of 'O' scale clockwork. The locomotives now have working lights and generate, in the case of the diesels, an engine noise which relates to the speed at which they are travelling.
Electric multiple units make the, 'beep beep beep,' signal before closing their automatic doors and the control of these sophisticated models is not effected by turning a great big bakelite knob on a mains transformer, the operator wanders around with a hand held remote control unit and presses buttons.
Nevertheless, the trains still sometimes need a prod with a finger to get them started. It's good to see that not everything has changed.