50 pounds is a boat anchor. I am no weight weenie but good Lord! That would wear me out. Even the bikes from the 1950s didn't weigh that much.DavyRay, pedaling it extends the battery life. 50lbs isn't that heavy, I used to ride a 40lb bmx bike for miles and I could bunny hop a couple of vertical feet without problem. Now I have no problem riding my 35lb krampus 30+miles with no motor. My camelback weights about 15lbs(I carry a ton[sic] of stuff), so I am powering 50lbs of stuff up hills. The pedal option might make a battery good for 10 miles last 20+ miles.
I dislike the idea of sharing the trails with anything motorized. But we can't even keep gas powered motorcycles off our many miles of unofficial trails. i would love it if the gas-moto guys switched to e-moto, though this just might open the doors for more moto.
Since you've got all those circuits, you could presumably engineer it to not spin out like gas-motos do. this feature would seriously mitigate the tendency to shred(in the damage sense) trails when using a motor.