High-speed rail plans continue to take shape across the country. Public hearings on the Southeast High Speed Rail Corridor between Washington, D.C., and Charlotte, N.C., are under way. Out West, a proposed 50-mile highway through southern Nevada would include right-of-way for high-speed rail. But some in Oklahoma fear that a proposed high-speed train connecting Oklahoma City and Tulsa doesn't make financial sense, given the lack of population density in the region.

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