I shall fill in for Schnellzug then.
This multiple unit was once a common sight in a certain area, but not exactly well-known among the less aware elsewhere in the country. It was among the first to boast a feature that we are very used to, although its use is not as common now as it was 20 years ago, and has at least one class which is similar to it. It operated exclusively on commuter routes, at least one of which was threatened by our old friend Dr Beeching, although it also had regular sojourns to the seaside. The unit that now runs in its place has a TOPS number that is very similar to the original.