While we are talking genies and batteries, I was wondering if any of the hub genies out there can provide enough torque to provide noticeable assistance. I'm not looking for a 30 mph ebike. Just a little extra something to help on short hills. You might also be able to reclaim some of that precious kinetic energy through regen on the down hills. Maybe a really big ass capacitor might serve well in this application as you can charge/discharge at pretty high currents for short periods.