That's pretty outrageous for a car to be so "Eco Friendly" that it will strand you rather than let you go to a garage isn't it?I came across someone resently who had a similar issue previously with a different manufacturer. Their problem was the adblue leaked out. As per rules it wouldn't restart. They din't know of it leaking and while out shopping it leaked enough to go into "dun't start" mode. These things happen.
In the OP's case he admits a warning came up saying 1,000 Miles to go before AdBlue is all gone. I would have taken immediate action.