I suspect the hose being laid underground lets water through — the idea, then, would be to transport water from the irrigation canal to the field to, well, irrigate it, but with no water loss due to evaporation. This would explain why the far end of the hose was simply cut and buried underground, as well as the shot…

Hah - no worries. Here's a screenshot from the keynote with more of Spotlight's new capabilities on it, so you can see more:

isn't it killing "Charles" app ?