31-01-20, 02:11 PM
None of this stuff is new. Whether it tyres, emissions, rubbish chucked from windows. Its been known about for decades. I recall reading a report 20 years ago regarding pollution from catalytic conversion, a university had measured the levels of palladium, rhodium and the other precious metals and found that some were at the levels at which they could be economically mined from the roadside verges