Thank you, Mr. Brockmeyer, for your perspective from Europe, because I think that's been fairly interesting. Personally, I travelled on the TGVs in France years ago, on a trip, and it was an interesting experience. That's my only vantage point on European rail.
You talked about the four-hour mark as being a bit of a tipping point in terms of viability in competing versus air. What happens after the four-hour mark? What does it look like at five, six, etc.?