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Anti-Pollution masks for bicycling

for filtering out car exhaust, diesel fumes, particulate matter
I was going to invent one of these devices like ten years ago. Of course they already have them in Europe and elsewhere. I haven't seen many people using them in the states, but I don't travel much in cities etc. where such a mask would be crucial in my opinion.
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2008-04-09 22:06:33
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