There are a couple of things. The first thing is that it really depends. Talking about robustness, one thing that changes the answer to a lot of these questions is when and where the charging is happening. If everybody comes home at six o'clock and plugs their electric vehicle into a neighbourhood with a distribution system that has not been upgraded, it doesn't work. However, if we have smart charging and different people are charging at different times of the day—taking advantage of high-wind periods of the day, for example—it's a totally different story. To what extent are we going to have rates and policies that incentivize people to charge during optimal times of the day? That's part of it.
To the earlier part of the conversation, these distribution systems vary across the country in how much additional capacity they have on them. Unfortunately, that's data—and Brian was alluding to this as well—that's really hard for us to get our hands on, at least from a research perspective. It's a bit trickier to know what's going on in those distribution systems. It also depends on the policies for when and where people are charging.