SoloWheel

www.inventist.com/solowheel/
www.gizmag.com/solowheel-gyro-stabilized-electric-unicycle/17900/

The Wheel - Sbyke

www.sbyke.com/
www.gizmag.com/sbyke-bmx-skateboard-scooter-hybrid-due-for-release/18649/

Wave Skiing

www.gizmodo.com/#!5755952/skiing-on-a-giant-wave-looks-like-a-lot-of-mad-fun

ScorpionRacer

www.scorpionracer.com

Sporthocker

www.sporthocker.com/
www.ohgizmo.com/2011/02/03/sporthocker-a-new-sport-that-revolves-around-sitting-on-a-stool/

Tandem Snowmobile Backflip

Caleb and Colton Moore Tandem Snowmobile Backflip Indian Air

Jade Warrior

prone drag bike
www.dragzine.com/news/the-jade-warrior-a-truly-insane-and-one-of-a-kind-ride/

StreetFlyer

Created by Dr. Carsten Mehring
www.streetflyer.info/