The mainstay of the Miami public transport system is the Metrobus; however, the network is large and takes some time to get used to. The fare is standard to any destination. If you need to change buses, ask for a transfer when buying your ticket, as it costs extra. There is also an elevated train service called the Metrorail, which connects North and South Miami with stations at one mile intervals. For a more scenic option, the elevated monorail, the Metromover, offers great views of downtown Miami and Biscayne Bay and connects with buses and trains. However, most visitors take taxis or hire a car. This can be more convenient, as the city is sprawled out over a large area. To rent a car, the driver must be over 21, have a valid credit card and, if from abroad, hold a passport and English language driving license. Be aware when driving around Miami that local drivers can be aggressive.