Thanks for providing the link to the article I was referring to. It seems that I was mistaken about my conclusions and recollections. Even though the data used can be dated it still shows trends, IMO. Look where the car makers are going.
I'm not a statistician so what the heck do I know. But I feel that owner's of EVs are interested in cost savings and pollution reduction. Carmakers and EV energy providers are interested in profits.
There are so many more motivations and conclusions that can be made.