Segway

The Segway cost $4,950 at launch but produced only 80 units per day, yielding just 100,000 total sales in its first six years—far from predicting an urban revolution. Weighing 83 pounds with a 12-mile range, it is 8 mph slower than the average bicycle and less practical than #7 Clubhouse’s fleeting hype, which at least reached 10 million users at its peak. Its gyroscopic balance impressed, but the lack of infrastructure and bulky design limited it to tour groups, while $500 electric scooters later succeeded by being 85% lighter and offering similar range. Segway remains a textbook case of overhype, with a price 10 times higher than typical mobility alternatives but 50% worse performance in speed and portability.