Updated Feb 16th 2014 5:52PM
I realize boiling this big issue down to one key factor seems overly simplistic. However, what the consumer wants, the consumer usually gets -- and what the U.S. consumer, in general, most craves is convenience, in my opinion.
EVs allow for the bulk of "fueling" to be done at the driver's home, while he or she is sleeping away. And, when away from home, the driver will largely be able to plug in and charge up while parked at work, a restaurant, a shopping center, and so on. No need to go out of one's way -- even if it's only a few blocks -- to a gas station. Many people like this idea, and I'd venture to say that most of those same people likely don't want to have to make pit stops at hydrogen fueling stations, either.
Investors might consider asking themselves this question when considering investing in companies that make consumer goods: Will, or do, a good number of consumers largely view this product as adding convenience to their lives? Tesla's EVs pass that test, in my opinion.