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Politics : Formerly About Advanced Micro Devices
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To: Road Walker who wrote (374526)3/19/2008 2:44:39 PM
From: TimF  Read Replies (2) of 1576214
 
In transportation, overall, we have been pretty much flat line in physical efficiency since the late 70's.

Physical efficiency has increased a lot since the 70s. We get move more weight the same or a further distance per gallon of gasoline used, or more total acceleration per gallon. But we use more gas because we are trying to move more weight around (both because vehicles are heavier, and because their are more of them). Fuel economy has not greatly improved, but fuel efficiency has.

Productivity per gallon of oil or gasoline used, or per total energy used has gone up quite a bit.

And, presumably, there would be new jobs that create commerce and taxes, and exportable technology. Good ancillary GDP.

And the cost would wipe out other jobs. Its not a free lunch.
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