Where I live we are being encouraged to buy electric cars through billboard adverts. These say things like electric cars can travel 100 miles before needing to be charged and that the average charging time is half an hour.
That sounds fine if all you want is a run around for a city or town to go to the supermarket and work, but pretty impractical for a lot if people. Especially given how few charging places there are. It would in reality mean that I could never drive more than 100 miles before going nack home to charge up the car.