The Mitsubishi i-MiEV isn't getting any cheaper as availability expands beyond Japan and the next market to get the lil' electric runabout will be the United Kingdom. Including the 17.5 percent value added tax, the i-MiEV will run British buyers a cool £33,699 before a £5,000 government subsidy. That equates to about $50,500 at current exchange rates, and even bearing in mind the UK's inflated auto prices, it still seems well above the pre-subsidy price in the low $40K range in Japan.
On the EU test cycle the range estimate has dropped from the 100 miles measured in Japan to only 80 miles and real world results will likely be less than that.
Even with an electrical operating cost of about $214 for 12,000 miles of annual driving, it's going to take a long time
to come out ahead financially. The standard gas engined i is not available in the UK, but the sub-compact Colt starts at just £8,999. On the other hand, early adopters are helping to subsidize the future, if they can afford the present.