Wow, that wasn't the point at all. The trolley line in Detroit wasn't a real mass transit line, it was only meant for tourists to see the city, and was not used for commuting. Anyhow, there's a reason San Francisco uses CABLE CARS, and it's not because they are neat looking. The hills in San Francisco have such a steep grade that there is no other mass transit mode which is capable of climbing the grade - only cable cars can make it.
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