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Interesting graphs and charts department
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11-17-2018, 09:12 PM
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xoxoxoBruce
The future is unwritten
Join Date: Oct 2002
Posts: 71,105
A human on a bicycle (reasonably flat terrain, not like mountain goat Griff) is still the most energy efficient travel.
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The descent of man ~ Nixon, Friedman, Reagan, Trump.
xoxoxoBruce
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