That's absolutely right. Much of the technology, the design, is proprietary. Keep in mind how different vehicles are in their design. I don't think you'll ever see just a swap system. Pilot programs have been tried in Israel and other places, and they haven't worked.
By the way, when we talk about infrastructure or a recharging station, one station is not going to do it. All the reports I've seen show that many, many more charging stations are going to be required in terms of our infrastructure. Right now, we're so far from that objective that it will impede, actually, people's ability to see the value proposition as they go forward, particularly if they are doubtful that they'll be able to get recharging.