From the project's Kickstarter:
"We have backgrounds in mechanical, electrical, and aerospace engineering from Stanford. We also love longboarding, snowboarding, kiteboarding, and wakeboarding. So it's no surprise that we joined our revolutionary prototype drivetrain with our favorite longboard components. But the bigger picture is even more exciting: changing the world of transportation and shifting the perception of what a vehicle can be. Here's an example. Charge the board every day (6 miles of use). Total electricity cost? Less than $5 per year."For reference, Wikipedia's description of the last mile problem is short but does the trick. I'm shocked at the amount of power they say the motor generates (2000 watts, or about as powerful as a moped engine).