Just in case you didn't know, Xootr now makes an OFFICIAL ebike. It can take a 220lb person 15 miles no pedaling, or 25 miles with pedal assist. The MAJOR drawback is it's top speed - 12mph. I just wish they'd put braze ons on the top tube, so a battery can be mounted there. This way you can have a wider choice of options when it comes to electrifying this little sucka!!!
Oh, there is one other small issue,... The battery is non-removable. You would be REQUIRED to bring this inside, or run an extension cable, in order to charge it. A top tube mounted REMOVABLE battery would have solved this issue as well.
[SIZE=3]Xootr Swift-e (Electrified) - 8 Speed
I believe the custom Xootr Swift frames that are being made, thanks to @jur, can correct this design flaw. I've seen gorgeous disk models and such,... Those would be a perfect option. And they have one special thing above all else,...BLING!!!