I have created some routes than I am going to use in the US in the Sept.
When I found out the Navigation App would be ready by then it seems perfect as now I don't need to carry a tomtom over the America.
BUt everytime I try to load the route it comes back with
Route Calculation Failed
But routes in the UK work.
I even downloaded the offline maps to see if this helps.
Have attached one of the routes for you guys to try yourself