1.One cable car moves past another cable car on the street
2. SOUNDBITE (English) Erika Kato, Spokesperson, San Francisco Municipal Transportation Agency:
"We are the only cable car operator in the world. It's a large tourist attraction for San Francisco. But not only does it serve tourists coming to the city and visiting for the first time, but the California Line for example is a large commuter line that get people to work. Beginning on Friday for ten days we are going to be doing a complete shutdown of the cable car system. This really has to do with the state of good repair to make sure everything runs safely and reliably. This is a very dated system. It's old. It's been in service since the 1800's. The current gear boxes that we're working to replace have been in service since 1984 so this really just goes to the state of good repair of things."
3. Informational sign warning riders of Friday's cable car closure
4. Close up of "Cable Car Terminal Closed" on sign
5. Cable car slowly pulls out of station
6. Cable car pulls into station in front of tourists
7. Cable car drivers manually turn car around at station
8. SOUNDBITE (English) Jose Martinez, Visitor from Dominican Republic:
"Tha's a bummer but you know, they have to do it. It's for safety of people or maybe upgrades. They'll have to, I guess, come back some other time."
9. SOUNDBITE (English) Stephanie McAlinden, Visitor from Ireland:
"I guess I didn't know at all so I feel really lucky that I got here just in time to ride one of the last couple rides before Friday."
San Francisco's iconic cable cars will stop running for 10 days starting Friday while they undergo the final repairs in a three-year restoration project of the gearboxes that propel the world-famous system up the city's notoriously steep hills.
Shuttle buses will run along the three cable car routes where historic cars typically travel at a steady ten miles per hour.
The agency says it needs to get the manually operated cable cars off the streets to rehabilitate the gearboxes that power the system that started in the 1890s.
The gearboxes spin the 30-foot tall wheels that pull the 12 miles of steel cables under San Francisco to lift the city's 40 cable cars up steep hills.
The shutdown is sure to disappoint some of the tourists visiting the city next week.
Long lines typically snake around several sites where riders can hope on, despite each car's capacity of 60 people.
The city says 7.5 million passengers ride the cable cars each year.
San Francisco's cable cars were named a National Historic Landmark in 1964 by the U.S. Interior Department's National Park Service.