Oookaay: New World Of Tanks Trailer

The World Of Tanks closed beta is in motion, and Wargaming.net have put out a new trailer to celebrate (below). It's not a trailer I understand, however. Perhaps it's mocking the Blur adverts or something? I am tiny brain. Anyway, the more important consideration is: tanks a lot? Or tanks but no tanks? Ah, the pun barrel is hollow and oh so empty.