The Rover, MG Rover, Austin and whatever other brand the Metro was sold under, was a forgettable mini that wasn't taken very seriously, even by the company that made it. This may explain this late 1980s-early 1990s advertisement spoofing the 1966 Adam West-era Batman and Robin TV series.
The one-minute long commercial shows the dynamic duo swapping their funky 1960s Batmobile for the British mini because "it's rush hour in Gotham city and the Batmobile is big"...
The ad ends with the message, "When you got to.... pick up a penguin, Metro gets you going." Holy priceless collection of Etruscan snoods.... Enjoy the video after the break.