O.K., fbb has to admit it; he needed an extra clue from No 3 son!
It is a line which will stimulate industry and leisure facilities; which is why the third puzzle picture was just plain impossible to locate!
Clearly the photographer is in a tram, and it must be a modern one because of the uncomfortable plastic seats. It is obviously at some open square location but fbb could not find it. Of course with a massive clue from No 3 son, it became obvious.
But here, on StreetView and from a different angle is where the tram was at!
Tomorrow fbb will take his avid readers on a ride on full length of the extension into France, but, in the meantime, here is a plan which might help stabilise the mental faculties after the above blog! (click on the map for an enlarged version)
A further note from a "reliable source" suggests that the company will continue to run its tendered routes. Further details are awaited.