It was a clean race. Things are getting better in our sport. The testing is good and I'm confident it was a clean event.

There were points in the race I thought I had it. But you never know how the other people are going to come into these races, what kind of shape they're in. We did that long uphill three times and I just didn't have the legs for it. When I started, I was feeling great, very excited and ready to go.

We've been testing the systems and they have been better than 90 percent accurate, which is better than the human average. We haven't set a hard deadline, but next summer is realistic. We want to make sure it is completely reliable.

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

In the morning we drink lots of espresso. That's our ritual.

It might be one of the last sprint relays we do together. To finish it with an Olympic medal, I'm not going to say it was surreal. We promised each other we wouldn't get too fruity at the end of this.