Redwood City, UNITED STATES
A worker wrings water from a towel while cleaning an automobile at Eco Clean Auto Clean in Redwood City...
A worker wrings water from a towel while cleaning an automobile at Eco Clean Auto Clean in Redwood City, California May 12, 2015. The car wash uses no hoses or running water and approximately one cup of water, mixed with a biodegradable formula, is required for each vehicle it cleans, according to the owner. REUTERS/Robert Galbraith