Page 1 of 1

Commented On: Tesla Motors Loses Libel Case Over Top Gear's Roadster Review (Again)


Green Car Reports 0 Views 16 comments
That's a great idea, but turning also costs energy, which is why EPA uses standardized tests: http://en.wikipedia.org/wiki/United_States_Environmental_Protection_Agency#Fuel_economy

Commented On: Forget Hydrogen: Here They Are, The Two Fuels of The Future


Green Car Reports 10,424 Views 72 comments
I only found "Conversion of natural gas to methanol, as widely practiced in the chemicals industry, could provide a cost effective route to manufacturing an alternative, or supplement, to gasoline, while keeping CO2 emissions at roughly the same level.", nothing about the relatively non-toxic ethanol that NASCAR uses being worse than methanol.

Commented On: Fuel-Cell Vehicles Are Likely Coming (A Few): Who's Winning?


Green Car Reports 0 Views 42 comments
Also, there's more hydrogen in a liter of biodiesel than a liter of liquid hydrogen.

Commented On: Fuel-Cell Vehicles Are Likely Coming (A Few): Who's Winning?


Green Car Reports 0 Views 42 comments
At 850°C, 225 megajoules are required (64% efficient) to electrolyze 1 kilogram of hydrogen from water. http://en.wikipedia.org/wiki/High-temperature_electrolysis

Compressing that to 350 bar (5000 psi) takes only 11 MJ. http://www.hydrogen.energy.gov/pdfs/9013_energy_requirements_for_hydrogen_gas_compression.pdf
Page 1 of 1