Even the $1.60 or whatever for 30 miles worth on the other car quoted don't seem so great a deal. What is your average gas now? $3?
You save $1.40 per 30 miles. Seeing as the electrics seem typically $10k-$20k more to buy than the gas equivalents you have to drive 300,000 miles to break even. Either something ain't right there or my math sucks.