Word: arb
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Dates: during 2000-2009
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...EREV testing process, like the one that California's Air Resources Board (ARB) uses, may not actually measure gasoline usage at all but rather kilowatt hours per 100 miles, or kWh/100m. That figure is converted into miles per gallon, which effectively makes miles per gallon irrelevant...
...Also, if you use the electric vehicle's or hybrid's electric-only mode, the miles per gallon are "infinite or have no meaning since no gas is being consumed," according to Anthony Eggert of California's ARB. Of course, it takes oil, coal, nuclear, wind or hydro power to create the energy electric cars are powered on, so even eco saints don't get off free. To complicate matters further, if you want a hydrogen-fuel-cell-powered vehicle, like a Honda FCX Clarity, you will need to measure mileage in m.p.k., or miles per kilograms of hydrogen...
...m.p.g. claim. "We ignore such claims entirely," he says. "We look at total energy consumed so we can figure out how much greenhouse gas is being emitted into the air." That is, the industry may be moving from miles per gallon to miles per bucket of soot or, in ARB's case, grams of CO2 per mile. For example, ARB rates a Ford Explorer at 400 grams of CO2 per mile for greenhouse-gas emissions. A Toyota Prius is rated at 200 grams per mile...