Use the arrow keys to move your taxi. Press R to change the radio station and H to sound the horn. Press the space bar to refuel, when you're at the fuel station.
Time to explore the streets of New York! Could there be a better way to do this than driving a yellow cab? Pick up your passengers and take them where they want to go, or collect coins in the streets. Keep an eye on your fuel meter and steer clear from the police. Enjoy your new taxi driver career!