wrote in message
Bottom line is that economics keeps a lot of material out, regs keeps
just about anything else potentially harmful out, and in the end, what
is used _generally_ would be environmentally neutral.

Fair enough; but my only reason for entering this thread was the apparent
confusion of the acronyms PCP and PCB. I had no intention of making any
scientific, political, or value judgement beyond that. For all I know,
these cars have PCP in their glove boxes, PCB in their brakes, and STP in
their crankcases.

Joe F.