In reply to Andrew Sandercock:
Orpiere, Buis Les Baronnes area?
I've flown and hired a car (I live next to Stansted so it's easy). Not sure how public transport would work out once there. The airports are all a drive away.
Having just driven to switzland, I don't think I'd be put off doing it again. It wasn't so bad to do, but the fast way via the tunnel is expensive relative to ferry.