I also don't understand the need for charging stations to generate their own electricity. I do, however, think the way which electric cars are filled/charged will be fundamentally different than how our current automobiles are filled with gasoline. I think every time an electric car is parked, it will be plugged in, either to charge or to send power back to the grid. Perhaps the net metering part is what they meant by the ability of stations to generate their own power. I think "stations" will be ubiquitous, with outlets in most major parking lots. This scenario still doesn't help people who want to take long road trips on their electric vehicle but it does cover most use cases.