Hi Egor,
The mount you see going to the seat down tube is an extra mount to stabilize the drive train and the motor. The motor doesn't move after it is mounted. While it is true we are talking to Max Torque about an automatic clutch, we haven't reached our goal in both price point and ratios. I will tell you that everyone that has riden and actually viewed the system was amazed. And most responded "it is so simple, why didn't I think of that". Another comment often heard was "there isn't anything that can go wrong in there".
The output shaft is totally suspended with high speed bearing and totally self contained in system.

Have fun,
Quenton