Grant says the company is working with auto manufacturers to explore how on-board computers can help detect whether a driver is drowsy or not paying attention to the road, and allow a driver to control certain things in the vehicle -- like temperature, and in-car stereo -- using eye-control technology.

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New facilities include temperature control systems, air-lock doors, cladding and a new ceiling.

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Located in the uppermost part of the eco-friendly home, the on-board plants would aid temperature regulation, control air quality, and provide everyday sustenance.

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In-room iPads control windows, TVs and temperature, while stone and weathered wood beams give the rooms a cozy alpine feel.

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