So, just who will buy a car that has a 100mile range on a good day, but probably much, much, less on a cold dark wet night?
Enter "The Nissan Leaf", helped into production with £20.7m of our money.
http://www.guardian.co.uk/business/2010/mar/18/nissan-leaf-sunderland-factory-jobs
Not the way forward, IMHO. 
Well two things spring to mind. Firstly they will have done their research for likely buyers. Secondly I think there is a huge market out there for such cars: The school run. Old folk who occasionally go down the shops. Second cars(for when the Omega breaks down)etc etc.
To be honest electric cars (or at least none petrol/diesel) have got to have a good future once battery life, weight etc issues are addressed. The roads of the future won't look like todays where people can have a free for all or put their boot down for a bit of fun. No we will all be driving nose to tail at a set speed, controlled by some fancy kit which hopefully won't go wrong too often.
The other two concerns I would have would be safety (How would they compare in a crash test against say an Omega?) and how would you charge them up and where? If you don't have a garage someone would unplug your charging lead after bedtime for a "bit of fun".
I just hope they don't bang on about them being green!