Theft isn't anymore an issue with this bike than a regular bike. My non-motorized bicycle costs about the same as the Faraday Poser. Heck, at more than 40 pounds - twice what my bike weights - the Faraday is probably safer than a regular bike.
As a regular cyclist, I'm of two minds on electric-assist vehicles. On one hand, anything with two wheels, quite, minimally polluting and fun has my seal of approval.
On the other hand, my experience has been that people who tend to ride electric bicycles (and gas-powered pit bikes and powered scooters of the Razor style) tend to be jerks who ride on sidewalks and terrorize pedestrians.