Just checked this out...
There's a few parts of the design that look questionable:
The frame and covers are Magnesium - a light flexible flammable metal. Flaming bike anyone?

The chain and motor are fully enclosed - how do you check it? Maintaining the bike is not much of a factor in the design.

And the maker's web page is really, really slow with too many pretty pix changes. I'm not waiting for this one...