Question:

What are those 2 wheeled scooter things that mall cops ride called?

Answer:

You are probably talking about the Segway, a motorized two wheel scooter like transporter.

More Info:

Segway Transport Land transport Green vehicles Scooter
Electric scooters

Electric motorcycles and scooters are plug-in electric vehicles with two or three wheels that can be recharged from any external source of electricity, and the electricity is stored on board in a rechargeable battery, which powers one or more electric motors to attain locomotion. Electric motorcycles, as distinguished from scooters, do not have a step-through frame.

As of August 2013[update], there are several commercial production electric motorcycles and scooters available in several markets around the world, including the Brammo Empulse, Zero S, Quantya Strada, Yamaha EC-03, Vectrix VX-2, Electric Motorsport GPR-S, Yo Exl, and the Lito Sora.

Wheeled vehicles
Electric vehicles

An electric vehicle (EV), also referred to as an electric drive vehicle, uses one or more electric motors or traction motors for propulsion. Three main types of electric vehicles exist, those that are directly powered from an external power station, those that are powered by stored electricity originally from an external power source, and those that are powered by an on-board electrical generator, such as an internal combustion engine (hybrid electric vehicles) or a hydrogen fuel cell. EVs include plug-in electric cars, hybrid electric cars, hydrogen vehicles, electric trains, electric lorries, electric airplanes, electric boats, electric motorcycles and scooters and electric spacecraft. Diesel submarines operating on battery power are, for the duration of the battery run, electric submarines, and some of the lighter UAVs are electrically-powered. Proposals exist for electric tanks.

EVs first came into existence in the mid-19th century, when electricity was among the preferred methods for motor vehicle propulsion, providing a level of comfort and ease of operation that could not be achieved by the gasoline cars of the time. The internal combustion engine (ICE) has been the dominant propulsion method for motor vehicles for almost 100 years, but electric power has remained commonplace in other vehicle types, such as trains and smaller vehicles of all types.


Segway Inc.

Segway Inc. of New Hampshire, USA, is the manufacturer of a two-wheeled, self-balancing electric vehicle, the Segway PT, invented by Dean Kamen. The name "Segway" is a homophone of "segue" (a smooth transition, literally Italian for "follows").

Segways have had success in niche markets such as transportation for police departments, military bases, warehouses, corporate campuses and industrial sites. The legal roadworthiness of the Segway varies with different jurisdictions' classification of the device as a motor vehicle.


Segway PT

The Segway PT is a two-wheeled, self-balancing, battery-powered electric vehicle invented by Dean Kamen. It is produced by Segway Inc. of New Hampshire, USA. The name Segway is a homophone of the word segue, meaning smooth transition. PT is an abbreviation for personal transporter.

Computers and motors in the base of the device keep the Segway PT upright when powered on with balancing enabled. A user commands the Segway to go forward by shifting their weight forward on the platform, and backward by shifting their weight backward. The Segway detects, as it balances, the change in its center of mass, and first establishes and then maintains a corresponding speed, forward or backward. Gyroscopic sensors and fluid-based leveling sensors detect the weight shift. To turn, the user presses the handlebar to the left or the right.

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