Interesting. In Seattle we now have 3 dockless bike shares (Spin, Lime and Ofo). I think Lime is about to roll out electric bikes, but so far none are. It makes riding up hills pretty rough, especially since they aren't geared very well.
Limit of 14.5 MPH feels a little slow to me.
I'd imagine they will need to classify them as "motor vehicles" which will require users to provide proof of a driver's license with motorcycle endorsement to use them.
Not really ideal for most casual users.
EDIT: http://www.wsp.wa.gov/traveler/docs/equipmt/elect_bicycle.pd...It appears by staying under 20 MPH they can avoid this.
http://www.mto.gov.on.ca/english/driver/electric-bicycles.sh...
It's there to help with hills and similarly harder parts of a ride, but they won't enable you to ride faster than an experienced rider on a light road bike.