Possibly around the same time, British Leyland (or was it Austin Rover by then?) had a marketing campaign based on "Now we're motoring!".
To me, both BR and BL's slogans sounded like a subtle way of saying "yes, we were c**p before, but we're trying to be a bit less c**p now - honest"
I wonder if this style of half-apologetic marketing is a peculiarly British thing?
I've spent many years living overseas and I don't remember seeing this kind of slant used anywhere else. Especially not in the home of the Masters of Marketing, the USA, and I can't imagine the Germans or French advertising in this way either.
Isn't there a saying in politics "Never apologise, never explain” (supposedly attributed to Winston Churchill, but that may well be one of those urban myths)?