Pitty it 's too late to visit
Eurostar 373018 was "stored" on a side track in the village of Saint-Saulve at the corner of Rue Ernest Macarez (Route D935) and the waterway Le Vieil Escaut just northeast of Valenciennes France.
At the bottom of the following article and photos which shows the map location and it states that the train has been moved and scrapped in October 2018.
I found one image of the engine with the passenger cars gone.
The lastest Google Earth shows only the front and rear engine on the track.
If you have Google Earth Pro, you will see the entire train with passenger cars on this stretch of side tracks. Go to the 5 May 2016 historical view.