The wheels are close enough to standard. With an 8.5AH lithium pack you get maybe 7 AH usable, for an assisted range of maybe 20-22 miles on a route with some hills. "Scootering" in throttle mode with no pedaling would get about half that, or less. The range specs always assume flat terrain, light rider, tailwind... I have a giant 20AH Ping pack on my EZIP Trailz, and that is good for maybe 35-40 miles assisted. My bike is heavier, though, and while it has more torque than hubmotor bikes, it is also louder, cruder and has less range because of the weight.
I was actually thinking of getting myself a 21st century E-bike, but they all seem to involve trade-offs, like shift and throttle on the wrong sides, no water bottle cage bosses in the frames, and hubmotors with much more power than my bike's 450 watts, but a greater chance of stalling on a steep hill...