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Originally Posted by JRMichler
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It would be courteous for M.I.T.and the others to offer a 'flow-chart' presentation of the proposed vehicle,highlighting each technology and it's representative contribution to the overall efficiency, and the context of the driving schedule in which they expect the performance.
In today's vernacular,when they say 40-mpg,they mean a composite mpg based upon EPA dynamometer testing,with 55% CITY and 45% HWY,with some highspeed acceleration runs and other tests mixed in.
Electric and hybrids are afforded arbitrarily high mpgs for the purpose of CAFE fleet averaging.It's a legal form of cooking-the-books,but it remains ledgerdemain.
A 36-sq-ft frontal area SUV,of 6,000-7,000 lbs,running air conditioning continuously, at 70 mph down the interstate,and returning 40-mpg WOULD be remarkable.
