Leica S2 - What do you think?

A new camera with a DSLR look and feel, but with a larger sensor, and thus with more pixels (37.5). It's built by Leica and has a price tag of $22,995. This is for the body only. Lenses start at $4,495.

What do you think about this? When I first heard about it I couldn't imagine anybody paying this kind of money for a photo camera.
Having not much of an idea about medium format, I later on noticed that there is quite some excitement about having medium format in such a body with such a "high" frame rate (1.5 fps).

I think it's still an unbelievable amount of money for a cam. Can someone enlighten me about medium format? How superior can it be to let's say a 5D Mark II?