Be safe out there...
Got my OneWheel last night and I've been flipping through the manual while sitting at work, daydreaming of riding it. I chuckled at all the things in the manual the void the warranty or are deemed "unsafe" that are pictured on the website or in videos.
CAUTION: Jumping and stunt riding will void your warranty.
Choose smooth, stable paths made of concrete and asphalt. Off-roading is not advised.
Never weave through traffic.
Do not perform racing, stunt riding or other maneuvers that may cause loss of control.
Always wear shoes that stay on your feet and will grip the board. Never ride barefoot or while wearing sandals or flip-flops.