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This summer, America will open its first new privately owned passenger rail service in more than a century. Called Brightline, the new train line will link Miami, Fort Lauderdale, and West Palm Beach in a bid to alleviate some of the traffic-choked highways along the Florida coast. The project will convert a "lightly used freight rail corridor" into a passenger line able to carry thousands of people a day, with the additional benefit of "adding millions of square feet of residential and commercial space" around it, Slate reports. Critics warn that residents of these auto-centric communities won't ditch their cars in sprawling cities where businesses are still far from downtown.