Freedom from oil: a revolutionary business plan

Imagine the cars' infrastructure run as a Telephony network.
The operator sells the cars (electric) at a good price (or even gives it for free, just like a telephone).
They could because the profit wouldn't come from the car, but from selling electricity, may be by minutes.
The country would be covered by a network of "smart" charge spots. Drivers could plug in anywhere, anytime, and would subscribe to a specific plan—unlimited miles, a maximum number of miles each month, or pay as you go—all for less than the equivalent cost for gas.
Of course you could have plugs in homes, offices, shopping malls.
Or the car driver would just have to exchange the exhausted battery with a fresh one.
Also this hardware would be free, you just pay the consume.
This doesn't only work on paper, it is potentially profitable, too.
Behind this idea there is Shai Agassi's Audacious Plan to Put Electric Cars on the Road and Project Better Place, the world's first global electric-car grid operator.
This is an interesting plan and catching too.
But I see a big difference with the Telephone network.
In this case, once you build the network the consume is at zero cost for the Operator, while the Cars' network will consume electricity which still has to be produced someway.
The second thought is that it wouldn't be cheaper than the existing oil .
We shouldn't forget that the big winner in the oil business is mainly the State.
How would they suck the same money?
They would certainly have a big part on this electricity, bringing either the profit to a minimum or the cost to the same level as oil.
The only winner would be the air, and that is not irrelevant