A reg monocoque near Flitwick

Yesterday morning travelling north we left the M1 jusg north of Toddington to avoid a bad traffic jam.nesr Flitwick we followed an A rdg (1983) monocoque in pristine condition. It had leaded light rear window and, as far as I vould see wS in splendid condition. I was unable to see the model name or even the engine marque. It hsd a very shallow lugon, probably too small for a bed.. as we turned towards the M1 he/she turned towards the East.

There was an old transit based one parked up by Barclays bank a few days back.  Didnt see how old, it was a bit too far away.