Electric unicycle with a stabilizer !
SoloWheel is balanced by a gyroscope, and its supposed to be easy to ride, like a Segway. I love riding on a Segway, and this works the same way - Solowheel accelerates when you lean forward and slows down when you lean back:
Going downhill the battery recharges, so you can go up to 12 mph, and get more than two hours on a charge.
I have e-unicycle envy... I want one.
Anyone have a spare $1800 I can borrow?