My DYI car-dock
In my case, I bought 2 common "cell phone" mounts, with suction cups from AutoZone. The neck can be bent in whichever way one find convenient and it is plenty sturdy. These should cost anywhere from $10 to $20.
I then drilled a hole in the adapter's bottom plate and through the said hole, I have routed a micro USB cable, very tightly (yeah, one could use hot glue too, mines are both friction fits).
Now, I just slide the N1 into the cradles, so that it mates with the micro USB end protruding from the bottom of the cradle's plate and it works real fine. The USB connector provides juice to the phone, while driving AND acts to hold the the device in the cradle.