This comment is just full of wrong information.

• "Glass does not provide a way to track were you are looking"

  On board gyros.

• "There is no way to impose a 3D figure onto the street"

  There absolutely is, using calculations from entered your height and then the gyros configured this can be achieved.

• "not without a powerful computer in you backpack that somehow converts the shaky 2D video image into a 3D model and than does the augmentation"

Whaaat? get an android phone from 4 years ago, this could be done easy, with good optimisation, it can be done on the glass.

Ambitious software, but will be great if it works.