I think as a second car an electric car could work. And for short journeys would have a big positive impact on the environment.
For me it's either lots of short journeys or long once. Nothing in between. If I had to have only one car it would have to currently be one that used fossil fuel.
My comment about batteries and problems - Lithium Ion batteries will only have a good life if they are never charged from flat. If you let them run flat then this reduces the charge cycles they can tolerate. And the cost of these battery packs (hence a lease) is high...
Imagine having a car and leasing the engine... when you stop paying the lease you lose the engine and your car isn't any use. That's what is being proposed.
Maybe cars like the Volt are the way forward and at some point the petrol engine will be replaced with some other technology to charge on the go. Like a mini fusion reactor or something.
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Electric car range. 
Electric car range. 