2 The Segway was invented by Dean Kamen. It is a little under a metre tall and weighs 31 kilograms. It has two wheels, just like other scooters. But the Segway’s wheels are not at the front and the back-they are at the sides! It has an electric motor, and can go as fast as 20 kilometres an hour. It is also very difficult for a rider to fall off a Segway because the motor is heavy, and close to the ground. Dean thinks the Segway will become very popular. He hopes it will one day replace cars in big cities.