This new motor drive system probably won't hit the US for quite a while, but it is worth keeping track of.
Click this jpg. That will open another window in which you can zoom in order to read better. It looks like something to look forward to. e-assist through the gears.
The web page is:
They argue that it could be added to any bike as easily as changing a Bottom Bracket, would fit any/all bikes...
Our Oak Ridge National Laboratory is working on the axial gap motor concept that this uses. They think it may be BIG in future evehicles. I guess the future is now.
Let's hope half of this proves out. This is Gen 2. There was an SO1.