"was suppose to be free for car charging at night, but that has not been implemented)'
Are you kidding? the taxpayers have already cough up $14k for your volt , and your looking for free electricity too. No sense of green entitlement here...
" costed me about $1,000 (after rebate)" Really ? how much before?
"Electricity cost is about 1/3 of gas cost for the same distance."
Sure it does ,when 28.5% of the total  cost of the vehicle is picked up by the taxpayers.
$14k/$49K