The passing of an era indeed.
I was at school at Hazlegrove, just up the road in Sparkford from the Haynes HQ, before the smart buildings, cafe and museum were built. John Haynes junior was a near-contemporary at the school. He used to arrive in assorted, often eclectic, transportation. I was a boarder, IIRC Haynes was a day-pupil or maybe a weekly boarder, so had rather more trips up the school drive than the rest of us...
1985 4/4 4str, Jubilee Blue