The inestimable Alan Williams in "Not the Age of the train" in 1983 (I think the article first appeared in "Modern Railways"
Having sung the praises of the PEPs ("Posh Expensive Peooplemovers", he goes on to discuss the new "Unposh Greatly Loathed Incredibly Expensive Steel Train" )-
"The new Peoplemover in Shining Steel" (no acronym allowed!) comes in varous guises. Class 210 is BREL's contender for the repaklcement of the Smelly Old Diesels, and is much preferred by the PTEs to the railbus (who wouldn't?) but is so expensive that nione can afford it. Class 317 is an overhead electric version specially designed for one-man operation to allow ASLEF more instant surprise holidays and with aircraft type lavatories which allow you to do what comes naturally when the train is standing in the station, while Class 455is amore prosaic conductor rail electric version for the Southern Region, specially desined for DODO (dual operatives dozing off) operation to avoid prolonged ASLEF instant hiolidays (SR management knows a brick wall when it sees one) and, because nice people from Surrey don't do that sort of thing, no lavatories at all.