Sergey Brin probably doesn't ride the New York City subway that often, but when he does, he does it in style. The Google co-founder was recently spotted on the downtown 3 train, dressed in full ninja regalia and sporting his company's Project Glass augmented reality eyewear. Brooklyn resident and AR enthusiast Noah Zerkin captured the moment late Sunday night, and apparently had a brief conversation with Brin, as well.

The executive has been known to wear Google's headset in public, though Google has thus far announced few details on its Project Glass progress. Brin, for his part, has said he wants to bring the eyewear to market by 2014. Apparently, it's already subway-ready.