Solowheel: a stabilized electric unicycle

[Amuro_Lee]

http://solowheel.com
http://www.youtube.com/watch?v=6MlAr3hDB1E

As a personal transport, I think it is more portable, practical and affordable than the the Yikebike.
http://www.yikebike.com
http://www.youtube.com/watch?v=X813eTuZJkc