But now, not only can you buy your own flying panties for a mere ¥1000 (about $12 USD), but if you're in Tokyo on March 6th you can take part in a special event called Sora fest! and fly your panties with other people, or even make your own flying panties.
You know, this reminds me of the tales my mother tells about being in a club when she owned an Austin-Healey Bug-Eyed Sprite (it's a car). You would get together, maybe do a little racing, have lunch, hang out...this sounds kinda like that, but with flying panties instead of a car.
But you know, I don't care, as long as there's some epic video footage from the event.