Because it's not as easy as it looks...
Back to the Future promised us hoverboards by 2015, and while we're not quite there yet, we do have segways and swegways.
1. Marty McFail
2. That put baby in the corner
3. Hands-free segway? What could go wrong?
4. I find your lack of balance disturbing
5. Sweg'd off your feet
6. "Look Ma! No hands!"
7. Hit the deck
8. No one will catch you
9. Good cop, bad cop, mall cop
10. Dig deep
11. They're not for sitting on...
12. But they'll get your chores done in a flash
13. Just don't forget they're illegal to use on the streets