Anyone know what this little green wire is an where it should go. SEL PHEV. Right hand side of boot. Just odd place to have a hanging wire. 

I think it was already mentioned somewhere but I can't find it now.

It's some kind of sensor. I think it has to do something with the production of the car and should be removed after car is finished. If I remembered correctly. I'm not 100% sure.

Forget about it. Its used when they build the car and is attached to a wicking bit of fabric throughout the frame. They soak the car with water outside and if the fabric gets wet then they attach a multimeter to this wire to detect it.