The First-Ever Look Inside CAT's Proving Ground

Aug. 10 (Bloomberg) -- Bloomberg's Carol Massar gives us an inside look at Caterpillar's proving ground for tractors and their virtually reality lab where new machines can be tested before they're even built.
Dow Was Down 217 Points at Session Low
27:54 - Bloomberg's Julie Hyman updates the latest markets news. She reports on “Bloomberg Markets.” (Source: Bloomberg)
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