Unicycles aren’t commonly used unless you fall into a certain demographic. Usually 17-year-old dice-rollers (and we don’t mean gambling.) The EMBRIO Advanced Concept takes the unicycle to the year 2025, when even one-wheeled transportation can be sexy.
EMBRIO uses sensors and gyroscopes to balance up to two passengers on a large single wheel, using the two smaller “landing gear” wheels to balance the bike at higher speeds.
— Andrew Dobrow