I wonder how much energy used is "real" need vs. "frivolous" use.
We hear a lot about commuting and car pooling but as I look at energy use a lot
of travel is not productive and has a negative or zero return.
I am thinking about vacations, trips to relatives (I wonder how much energy
has been used by parents constant whine "when am I going to see you again"),
recreational boating, aviation, consumer sports attendance, etc.
At least in Los Angeles, weekend traffic is often worse that workday traffic.
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