The company said the screen on its Glass headset actually sits above the wearer's normal field of vision, not unlike a car's sun visor, and is meant for quick glances, not prolonged viewing.

CNN: Lawmaker: Google Glass and driving don't mix

The Motorola 815 comes packaged with a phone holder, visor clip, dash mount, car charger, and the MOTONAV service pre-installed on a memory card.

ENGADGET: Motorola T805 and T815 navigators: for most Bluetooth phones

The Motorola T805 comes with a car charger, cell phone mount, dash mount and visor clip -- with a requirement for a 12-month MOTONAV national subscription (including up-to-date maps).

ENGADGET: Motorola T805 and T815 navigators: for most Bluetooth phones