Having watched the video..
That sure is some amazing zoom! Even if it's completely pointless from a photographic point of view, it cannot be denied that it is very cool.
I am almost tempted to buy one. Not particularly for still photographs, but rather for the HD video combined with the amazingly long lens.
My personal view is that wildlife is best captured with video (if your interest is in the wildlife) and an equivalent semi-pro video camera with a lens that long is probably at least 10x the cost of this little device.
As an added bonus it can take high resolution still pictures in good light!