Generally, scooters are children's toys, and few adults will use them as transportation vehicles. Recently, a German company developed an adult version of the scooter Scrooser, which is designed with large rollers and electric power. It is very stylish. The rear wheel of the Scrooser has a built-in motor. As long as the user accelerates the electric scooter to a specific speed, the electric motor will intervene and accelerate. Same as the ordinary scooter