Ghost Train - London Tube

Good evening fellow "Blippers", had to go to London today, whilst getting off the tube managed to grab this shot on my HTC Mobile.

Funny how an "Impulse" shot can sometimes surprise. The tube looked like a ghost train hurtling through the station, and I was extremely luck to get the shot whilst only a couple of people were on the platform. Seconds after taking the photo, the platform was packed again.