For the last three years, I've been driving around in a Mark I Nissan Leaf electric car, and it's been great. Three years ago, there weren't that many of them about, but they have certainly picked up. When I got it, things were a bit uncertain, there were lots of neighsayers warning the battery pack would go bad and cost half the price of the car to replace, and also that it would never be practical etc. I was pretty confident it would be fine, but to minimise the risk, I took a three year lease. At the end of that the car goes back to the leasing company and if it does need a new battery, that would be their problem.