Hi Dave,
Well it's OK, haven't been to France since '87 and the Paris ring road were wicked, me in me Mini traveller, trailer, bicycles, kids and tents, heading for the south - bit like 'Nuts in May' perhaps.
Had this set kicking around for a while and always wanted to find the answer.
Douglas Adams suggested 42 - possibly the biz for most things but.
Address supplied - thanks - Chris.
PS - have pics of the Dordogne from '87 - perhaps another time.