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Watch Modern Marvels Season 4 Online

  • 7.9/10
  • COUNTRIES: United States of America
  • Subtitles: English

In 1912, a headlight-maker and an auto magnate built the first cross-country road to spur the demand for new cars; 70 years and $125 billion later, the highway system had grown to 42,000 miles. Rare photographs and interviews tell the incredible story of the “paving of America”.