It's only a 200w motor so you absolutely will not be able to put a 2nd person on that bike unless it's a child or something. I don't like the 200w motors and I don't think you'll be very happy with it unless you like going really slow or just want a very leisurely ride. The ezee motors are great, though, I just don't like this particularly setup.

This is about $300 more but it has a 500w motor and about 1.5 AH bigger battery. It runs on a hub motor just like the ezee.
http://www.currietech.com/currie-tec...ctric-bike.php

If you are willing to put your own together, you can put together a better setup for about half the cost. About $900 - $1000 and with probably more power and a bigger battery. If you buy a e-bike kit from like e-bikekit.com or hightekbikes.com or ampedbikes.com and then buy a lithium battery separately somewhere.