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Instead of driving back/forth to the shop this year, I "thought" I could ride the bike - 10 miles each way, some hills.
Yesterday I took the bike to the boat - 4 miles - thought I would die, a far cry from running marathons a few years back!
But, with a few weeks working my way up in distance, it's easily possible, so at least the gas emissions are reduced.
But 80%, that will take some massive intervention such as mass transit, different heating systems, and so on.
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