I built an electric mountain board using the hub motors and batteries from a broken hoverboard. The board is an MBS Atom 95X. The battery is a 10s2p 4400mAh pack. In testing I got 4.1 mile range from a full charge. The top speed on flat ground is 11 miles per hour.
You can read a little more about it here: http://www.wildcircuits.com/2016/10/electric-mountain-board.html