Yes, this is cool and terrifying and mesmerizing. But I swear to Subway Jesus, if you miss and hit the third rail and delay my commute, I will piss on your grave.
The skater, Koki, nailed the trick back in March on the lower level of the 145th St. IND station in Manhattan. It's part of Tengu: God of Mischief, a video compilation of urban skate tricks by director Colin Read.
"We waited till about 5 a.m. to get this trick but it was worth it. I wasn't sure Koki was going to do it when we went down, but after a few run ups he landed it first try."
Over at Gothamist, where we found the GIF, you can see a couple trailers for the film, which include clips of his aborted run-ups.