A Soapless Tunnel Washing Truck in Switzerland Cleans Walls With Water Pressure and Brushes

Colas Suisse, road work company in Lausanne, Switzerland, has posted a satisfying video featuring their innovative and eco-friendly tunnel washing truck, a vehicle that uses water pressure, without the use of soap, and an assortment of attached scrubbing brushes to clean dirt and soot off of tunnel walls and ceilings.

via The Kid Should See This

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