The city of Seattle, USA, has a big problem. The government owns over 3000 vehicles, such as cars, trucks and motorbikes. It buys 150 new vehicles each year. It has to buy 9.1 million litres of petrol every year just to run them! This is expensive and causes a lot of pollution. One answer to these problems is the Segway, an electric scooter. The government bought ten Segways and gave them to police officers, postmen, and other workers to try.