Last year Fran and I went there to see Johhhhhhhhhny Herbert and have a photo taken with him, plenty of pics on the web if you look.
Each year a different car marque is celebrated, this year it was AM and last it was Lotus.
It is a real event almost like a fete thrown by the village, plenty to see and do, even a band plays, lasts all day so you can turn up for breakfast, lunch or dinner.
most certainly worth going for a few hours. if you go have a look for the Ferrari 250 GTO made from a Datsun

just do a search on the web for Great British Welcome St Saturnin, you'll even get a map for for a scenic drive in the country side with refreshment stops.