With that kind of power who could afford to charge it anyway.
Going on billy's calc of 112 kwh capacity (which I'm going to take as correct - I confirmed a few of the other calcs before assuming the rest of his numbers were right), and the manufacturer's stated 97% transfer efficiency, you're looking at needing just shy of 116kwh to charge the battery to full. National average cost of a kwh of power is around 9 cents, so you're looking at around $10 to charge it to full.
That said, many of the electric cars designs are using less than 50hp, with many closer to 25hp (kinda - it makes more sense to compare electric engines using kw as the rating - many are around 60kw), so the power needed is lower. One thing to remember is that, is that electric motors tend to be rated at continuous output power, whereas combustion engines tend to be rated at peak output power. With that in mind, you can't directly compare gasoline horsepower to electric horsepower numbers.
Keep in mind too that a lot of these cars use things like regenerative braking to reclaim some spent energy back into the battery too.
Like I said, I'm of the opinion that what gas we have we're going to burn either way. Moving to electric for the environment is not an issue - gas is a finite resource that will be used up, and whether you're a global warming believer or not - whether we burn that gas in 20 years or 500 years, on geologic timescales it's irrelvant. The carbon sequestered in that will be returned to the atmosphere regardless.
What I DO see happening is huge price hikes on gasoline as quantities go down. Might not be for a while. Might not be during some of our lifetimes. But it'll happen eventually. Some people might not want to drive electric with $2-3 per gallon gasoline. I'd wager a lot of people would if gasoline was $15-20 per gallon. At that time, we need a replacement. Personally, I think we'll see come combination of electric and ethanol/biodiesel (electric for your everyday stuff - ethanol/biodiesel for those specific applications that still really need a combustion engine). Hydrogen is interesting, and burns as clean as you could want (the exhaust from a hydrogen engine is just water vapor), but I've been to several seminars and talks that make me serious question it's long term viability. Namely, the energy density of hydrogen is so low that carrying enough of it to really get around becomes a huge problem.
