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From vending to video games, payphones to parking meters, explore the inner workings of the coin-operated world.
Come take a trip across the incredible Mackinac Bridge, and discover why it's one of the world's most amazing construction projects.
Buckle up and take a drive to some of America's most fascinating truck stops.
Meet the loggers who started it all, and find out what really happens on the journey from stump to sawmill.
Freight trains helped build America, see how they are built, organized, and monitored.