
7.5
How Do They Do It?
2006
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Season 4 · Episode 1 — America's HighwaysIn 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”.
Up nextThe TelephoneS4 · E2 · 44 min
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