Two numbers, one road. The main road south from Glasgow, and indeed most of Scotland thanks to its connections with the M73 and A702, is having something of an identity crisis.
It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.
Today you can catch a train to France. You can even put your car on it, and be there in less than an hour. But in the 1980s, Euro Tunnel had competition - including plans to build a motorway across the English Channel.