A Citi bike in New York City was abandoned on train tracks at Steinway Street subway station last night, appearing to explode when a train arrived at the platform and struck it. There's some debate over whether it's a bona fide battery explosion or a spectacular arc from the bike shorting out the electrified rail.
The video appears to have been removed from its original URL—good luck with that!—so the one I've embedded here is from one of the many accounts reposting it.