Final answer:
The Segway Personal Transporter is the product announced in 2001 by inventor Dean Kamen. Its technology, especially its balance control, led to the creation of modern electric scooters and hoverboards.
Step-by-step explanation:
The product announced in 2001 by Dean Kamen that saw a rise, fall, and a rise again with its technology being utilized in electric scooters is the Segway Personal Transporter.
Although the invention didn't revolutionize transportation as much as originally anticipated, the Segway did eventually find its niche in certain markets such as tourism, law enforcement, and personal mobility within large facilities. Interestingly, the core technology of the Segway, which involves gyroscopic sensors and balance control, laid the groundwork for the development of the now-popular electric scooters. Modern electric scooters and hoverboards owe much to the pioneering design elements and balancing technology that the Segway introduced.
Despite the initial overestimation of its impact, Kamen's Segway truly is a remarkable testament to innovation in personal transportation devices and the dynamic—but sometimes unpredictable—nature of consumer product success.