The single biggest advantage of train travel is that it goes from city center to city center, without the need to arrive over an hour early, which in many cases can save you 2-3 hours of travel time (and taxi expenses) before you even count the travel itself.

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Last month, the governor of the Banque de France told the Financial Times the City of London should be deposed as the euro's main financial center so the single currency club can "control" most financial business in the eurozone.

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Part of the problem is that, unlike New York City, where companies such as Citigroup are headquartered, Los Angeles doesn't have a single activity center.

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