Thanks for your suggestions.
Despite our best intentions to get out-and-about the traffic around Le Mans and Arnage was impenetrable and the furthest we got was a walk into the village for lunch. We did manage a trip around the hypermarchè and ended up with a couple of dozen bottles of assorted reds. Whites were out of the question given that we were camping so I'm afraid that the delights of Jasnières remain a mystery to me.
Unfortunately I have to report a complete failure to properly select, taste and note the wine. Instead, we settled for drinking the stuff in the warm evening breeze whilst the cars streamed past, the Corvettes and Panoz' with much gnashing and wailing of teeth and the Audis with the whispered nonchalance that led them to win. There were some highlights and I'll mention them here as I did promise feedback, although I apologise for the total lack of meaningful information about the wines as I didn't have the material (nor, frankly, much inclination at the time) to write anything down.
We had a Cahors ('98 as I recall) that my companions stated smelled of dry raisins but I thought smelled of toilets. Horrible, but they liked it. My opinion was confirmed by the amount of sediment the bottle threw and their hangovers the following day. We had a different Cahors another day that had the same nose, but softer, and tasted much better, though still not particularly memorable. My favourite was a Gigondas which reeked of burnt toast but had very deep blackcurrant flavours. Lovely, lovely stuff.
Apart from that there were assorted Côtes du Rhône and Chinon, none outstanding but all very pleasant. The most noteworthy point though is that not a single one of them cost more than 4 euros (2.80GBP or
5USD). That may not be a revelation to the US patrons of this forum but to us Brits its incredible.
So, now I just need to plan another trip to make use of your suggestions. Shame...!
Nigel