Segway

The segway is a two - wheeled, self-balancing, battery powered electric vehicle which was invented by DEAN KAMEN.

 The technology part that it handles is it balances with the help of dual computers that run proprietary software, two tilt sensors, and five gyroscopic sensors . The servo drive motors rotate the wheels forwards or backwards as needed for balance or propulsion. The rider controls forward and backward movement by leaning the Segway relative to the combined center of mass of the rider and Segway, by holding the control bar closer to or farther from their body. The Segway detects the change in the balance point, and adjusts the speed at which it is balancing the rider accordingly. On older models, steering is controlled by a twist grip on the left handlebar, which simply varies the speeds between the two motors, rotating the Segway PT (a decrease in the speed of the  left wheel would turn the Segway PT to the left). Newer models enable the use of tilting the handle bar to steer.

Segways perform best in areas with adequate sidewalks, curb cuts at intersections, and ramps. They are used in some theme parks by visitors and employees. Angel island state park, in San Francisco Bay in California, offers Segway tours, but prohibits personal Segways except as needed by disabled visitors. The special police forces trained to protect the public during the 2008 summer olympics used the Segway for mobility.

A version of the Segway i2 is being marketed to the emergency medical services community. Equipped with light bars and a variety of hard and soft cases, it is sealed against wet conditions, and rated for 24 miles (39 kilometres) per charge. 

The cost of segway is
X2 SE - £4,995
x2T SE - £4,995
X2 SE camo - £5,195