People buy a new vehicle, it has new tires. 20,30,40,000 miles later, they put on a new pair. what happened to ALL of the old tire tread, and where did it literally disappear to?
Or, are we literally breathing the dust of 500,000,000,000,000+++ tires?
These tires all lost 1/2 of tread over the last 75 years and its gone somewhere, is it in the earth, the air or...our lungs?
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