we have a volt and love it, our other vehicle is a pick up. 1/2 ton 4 door 6.5 bed. it gets used to its capacity, either volume or weight at least once a month.
electrics are either about the same or better emissions wise depending on where you live and what powers your power plants. Coal is the way of the past. many coal plants have been converted to Natural gas which is cleaner than burning gasoline for your car.
After paying for our volt, its nearly free to own. the cost per mile is well below its competitors that are not plug in, are gas only. Cost about the same used as its competitors with the same features.
I hope they succeed as I will look at them when my gas truck is wore out. I would really love to have a VIA truck, but they are still fleet only. Having a 4x4 gas truck the same as what i have with the power capability would be awesome. it can run as a generator for the house, a 4x4 truck, jobsite power with 220 volt and still haul and tow.
The nature of an electric motor actually makes it easy to control when used at each wheel. Tesla uses one front and one rear motor. Cost wise, this is cheaper to manufacture.