A: Soon trains will be wheel-less and integrated to the track!

B: What?

A: Engines are the new wheels.

B: No, you need an engine and wheels to push against the track.

A: New carriages can power trains.

B: That makes them engines.

A: Anyway, in the long term the rails will become the engine and the wheel is a squeaky relic of history.

B: I think you mean a maglev. Which is really a very different system to...

A: Precisely.

A: Would it make any difference to the traveller from a business perspective?

B: Well, no...

A: See.

B: Arrrrrgggghhhhhhhhhhhhhhhhhhhhhh !