That certainly is something.
From what I read on the web site referred - flying on 60 foot lines (approx) and weight is in the neighborhood of 40 ounces (1.2 to 1.3 kg).
Looks like a real handful and it would pretty expensive to fly if you where burning up a speed controller each time.
If you look closely at the photos of the plane you will see a trailing wire - it looks like it is currently set up to use a RC transmitter to start and control the motor remotely. I am sure that will be eventually replaced with a stand alone timer onboard before too long.
Good quality 8s and 9s battery packs as he is using are in the $250 to $300 price range (each) and with good care you might get a season out of pack.
cheers, Graham