Comment Re:Exactly I've made this point here many times (Score 3, Informative) 188
I don't know where you're getting your "59-62%" figure from, it's usually higher than that. The US grid is about 93% efficient, generator-to-socket. Grid losses are far lower than most people give them credit for. Chargers are typically 92-94% efficient, depending on how fast the charge is. beyond the charger, charging is usually 90-99% efficient, depending on how fast the charge is and what sort of pack the vehicle has and pack management the vehicle does. Powertrains during operation (including battery losses) are usually 65-95% efficient, depending on torque and RPM conditions and the vehicle, with a usual operational average of 85%-ish. A small portion of the energy, depending on the type of driving, is returned via regenerative braking, which on li-ion EVs is usually 60-70% round trip efficiency (lower on NiMH hybrids). Ignoring regen, the whole picture is usually 70%-ish.
You're right about the efficiency of gasoline cars, but to be clear, it's not that the engine can't achieve higher - it's that maximum efficiency (usually 35%-ish) is confined to a narrow torque / rpm band. Gearshifting helps you pick your RPM / torque combination but you don't have control over power (the combination of the two) - that's dictated by the driving conditions. And then of course on top of that you have idling and no regen potential.
Concerning the production of electricity, it's important to note trends. Electricity is in most countries in the world, including the US, trending toward cleaner, both in regards to CO2 and to health-related pollutants. Gasoline, however, is trending toward dirtier - it involves more energy to extract and/or refine. There's no reason to expect these trends to reverse in the forseable future.