Off your trolley

A small case, marginally larger than a brief case ... on wheels?!? What's that about? Every week-day morning and evening on the daily commute men and women in apparently perfectly good shape drag these damned things along behind them, clattering over or through anyone who dares to venture into the imaginary corridor they have burrowed into time and space ahead of them. You shouldn't be able to buy one, less still use one unless you are at least 95 years old, or have a note from your doctor. Note to the manufacturers: In the interest of "silent running" use rubber instead of plastic for the wheels.