Segway

Steve Jobs reportedly said the Segway would be "as big as the PC," and John Doerr predicted $1 billion in sales faster than any company in history. Dean Kamen's self-balancing scooter launched in 2001 as a revolution in urban transportation, but sold only 30,000 units in its first two years—far below the projected 50,000 per month, which is 60% slower than the average product launch. It became a mall cop meme and tourist rental gimmick, quietly discontinued in 2020. The Segway sold fewer units than the Pontiac Aztek, a car often cited as one of the worst ever, with 30,000 total units versus the Aztek’s 119,000.