One "error/copyright" road on google map has been updated. I filled in the form to report the error back in 2010. Though, since then they have changed the provider of their maps and the way they handle errors/copyright. OSM, Bing(or what ever it was called back then), streetmap and multimap all showed the area differently to google, with only OSM being correct to how it is in real life.
I noticed quite a few in the up to date at the time London AtoZ I had. Rather annoying when it said there was a way to get from A to Z but you couldn't.
One way to check that the road is there, is to use streetview. If the G-car can go there so can you
I used that on a road in Wales, the Ordnance Survey map we had said there was no road, but there was a nice panoramic view of the route. The OS wasn't at the time that old either.