"And worse yet, losing overall efficiency in the process."
This is where you are dead wrong. Please don't state as fact your opinions that are not based on research.
My Volt is about 4x more efficient running on electricity than a similar ICE car. A gallon of gas is equivalent to 33 kWh of energy, and will propel a compact sedan for 30+ miles (let's say one mile per kWh just to round off the numbers).
Driving my Volt around town, I get on average 4 miles per kWh. The battery capacity on a full charge is 11 kWh, good for 40-50 miles of driving.
The reason for this is that the electric motor is far more efficient at converting stored energy into mechanical energy. For one thing, very little energy is wasted as heat.
The power utilities are also much more efficient at converting fossil fuels into stored energy or mechanical than your portable generator or gas-powered vehicle due to efficiencies of scale.
This is why EV's are so compelling--they are literally a breakthrough in efficiency.