“…Bentley et al of A.D. Little prepared a study for the Idaho National Engineering Laboratory (INEL) to estimate fuel-cycle CO, emissions from electric vehicles (EVs), fuel-cell vehicles (FCVs), and internal combustion engine vehicles (ICEVs) powered by different fuels (Bentley et al 1992). The researchers included the following fuel cycles in their study: petroleum to gasoline, NG to methanol, NG to CNG, NG to hydrogen, corn to ethanol, and electricity generation from various fuels.…”