Once the hive decides on something, it's full steam ahead. Why use a technology that fits well with our gas station network when you can replace the whole thing? And taking hours to charge is just a bonus.
Remember when all those people got stuck in the snow in VA for 18 hours. I don't think I'd want to be in an electric car right about then.
Besides, without hearing a V8 under the hood, how do you know the car is running?