Let me preface by saying that I am typing this on a Macbook (15" Retina) and love the device. And I have previously not been attracted to the Chromebook series for a variety of reasons: namely form, function and unclear ability to replace either my laptop or iPad. But the Chromebook Pixel is different - and I would argue much more important... regardless of whether you consider it attractive or compelling.
Four quick reasons I think it is important to at least learn more about the Pixel. Note: The best write up I found was on The Verge.
1) Google is getting in the high-end hardware game. You may not buy it and you may find it expensive: but it's great looking, matches the retina display, etc. And it signifies a very different move for Google: both in market placement and market entry (see Google Store rumors here).
2) It is entirely cloud based. This continues the Chromebook line and concept. And the pricing has caused debate considering the reliance on cloud. But again: it's important because it signifies a major shift: browser base, software in the cloud (my take here - even on Apple) and tie in to Google's wider world (ie google drive as the memory)
3) SIM card enabled. My biggest want in my laptop is LTE. It's coming of course and will be everywhere. The Pixel has it first.
4) It is touch enabled. And seems to do a good job with that. Like point 3 above, its coming everywhere. But again: the Pixel has it. And again, whether you want to buy a Google laptop or not, it is important in what it represents: cloud, mobility and touch.