I still think that if it came to court they would struggle to defend their case for not paying even if they have said no ring. At the end of the day the germans have classed it as a higway and maintain it as such. Under european law i expect that makes it just as valid a piece of highway as the M25.

It would be like saying we will insure you for all of the public highway except the A12. If they did that there would be all sorts of legal implications as you must have minimum third party insurance for driving on the highway. I don't think the law states you can just get away with insurance for some bits of it.