Awesome. One very (very very) small step closer to creating a pill to help the flushing process so we may sleep less, or not at all.
As efficient as evolution is, the ability not to sleep as much may not be a huge determinant in reproduction. Just 100 years ago, people worked all day, then relaxed and slept. There was little to no demand for not sleeping at all from a survival standpoint.
The main reason people want to stay awake all night now is to work more and advance their careers. You don't need that for survival.
Further, Pharma companies have done some amazing things. While I agree that it is unlikely soon, I am confident that if humans are around in 200 years, it becomes much, much more likely.
Such tradeoffs might be possible now, for those with sufficient discipline, but switching between very different ones is too hard.
I'm afraid this will require nanobots.