Boosted Boards, a Kickstarter success, are developing a super light electric skateboard to help commuters travel the last few miles on their trips. Based on a conventional long board design they have developed their own truck with an integrated dual motor drive system. Most electronic skateboards run a single motor which only drive a single wheel. This can create torque steer when accelerating and braking so the boosted board eliminated this by running a dual wheel drive set up.
Check out more great in depth photos of the development of their drive system.