Pretty sweet! Pretty expensive too!
The impressive bit is a flash system that is portable and can cycle that quickly without burning out. Don't know about any transmitter issues but I wouldn't have thought it would be a problem as TTL circuits respond in nanoseconds (nano= one trillionth). Just looks like a lot of money, but as long as it doesn't cost me I'm happy enjoying the shots
In the vid it said they were going to do some HDR sequence shots but I didn't see any sequences that looked HDR in the vid. He might not have processed the images to there yet but HDR sequence shots would be SICK.