Archie did write it.
He was a confirmed Saab man, in the days when you had to know the Owners' Cub members in an area in case you broke down, as there were no parts available this side of the North Sea.
He used to get quite poetic about them... "... red mane flying in the wind" etc - a red Saab he used to have.
But of many years now, he prefers four legs!
I think he is one of the best, if not THE best, accompaniest of a song that I've ever heard.