1) Google is obviously terrified that being seen wearing Glasses will brand you as terribly nerdy. (Compare the 'gargoyle' stigma in /Snow Crash/.) So to control the early perceptions they're doing a heavily-publicised early release to some carefully-selected mobile-phone-company-commercial beautiful people. The ideal candidate will be taking photos for /National Geographic/ while cave-diving for her Rhodes Scholarship. She will also be rather attractive, and not a wearer of prescription glasses. (Compare http://www.stevenlevy.com/index.php/05/08/the-sophie-choice . Courting Steven Levy seems to have turned out pretty poorly for Google, eh?)
2) Glasses looks very promising, but isn't it a bit of a stretch to call what it does Augmented Reality? AR more or less implies a HUD, or some other means of superimposing CGI on what you see of the real world. But the http://www.google.com/glass/start/how-it-feels/ video seems to suggest that instead Glasses takes a "picture-in-picture" approach, and the screen's transparency seems to serve mainly to make it feel less oppressive, and to minimise the amount it obstructs your vision when the whole screen is not in use. Goggles http://www.google.ie/mobile/goggles/ is more of a true AR system. (I'm not suggesting this is a bad decision: in light of the current problems with head-tracking http://blogs.valvesoftware.com/abrash/raster-scan-displays-m... and precise geolocation it seems like a good one.)