Technically it's a motorcycle very similar to the Spyder - http://www.brp.ca/spyder/ - and (as of 12 months ago) some states would require you to wear a helmet and/or take a motorcycle test for you to legally be able to drive this thing.
https://eliomotors.wordpress.com/2014/05/16/lets-talk-about-...
(I have no idea what progress they made on getting those laws changed in the past 12 months.)