aviation and military helicopter training airport. Passenger rail & bus Amtrak (the National Railroad Passenger Corporation) provides service to Salt Lake City and the Salt Lake City Intermodal Hub, operating its California Zephyr daily in both directions between Chicago, Illinois, and Emeryville, California (in the San Francisco Bay Area). The next westbound stop is in Winnemucca and the next eastbound station is in Provo. Greyhound Lines, provides interstate and intercity commercial bus service and operates out of the Salt Lake Intermodal Hub. Destinations for direct routes include Denver, Colorado; Portland, Oregon; Las Vegas, Nevada; and Reno, Nevada. Some of Greyhound's connections are operated in conjunction with Amtrak's Thruway Motorcoach. Taxi Three taxicab services exist in Salt Lake City: Ute Cab, City Cab, and Yellow Cab. In 2004, a controversy sprung up between entrepreneurs wishing to enter the taxi market in the city, and the mayor's office, which has maintained tight restrictions on the taxi fleet. The controversy was fueled by Yellow Cab's advocacy of Mayor Rocky Anderson's re-election campaign by displaying the mayor's campaign ads wrapped around the company's taxis, and further by the decision by the mayor's campaign not to report this as a political in-kind contribution. Anderson drove a cab for Yellow Cab while in college. See also References Salt Lake City, Utah