You probably don't realize it, but, at any given hour on any given day, a small yet incredibly sophisticated train armed with cameras, lasers, and ultrasound equipment is sliding around New York City's subway system inspecting the tracks. It looks a little bit like a Optimus Prime, and, like the good Transformers, it's there to keep you safe.
from Gizmodo http://ift.tt/1sg35JA
via Gizmodo
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