I like the glasses path, well I do wear glasses, but some elements remain unclear to me:

- are prescription glasses available for display ? I guess not ? - these glasses need to be online, I guess they do so with a phone and bluetooth connection nearby ? So that's the glasses, the band and the phone, oh and the glasses case, seems a lot to carry. - pedestrian navigation seems to be rolled out per city, so it's not like having gmaps available right out of the box.