Mr Morgan acknowledged this latest investment was "a bit of a shaft of light in the surrounding gloom" of recession in the motor industry.

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In one of the most powerful scenes from the show Mad Men, Don Draper stands in a darkened boardroom, a single shaft of light beaming onto a screen as he delivers the pitch of a lifetime to executives from Kodak.

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The most dramatic part of the cave is the opening that allows sunlight in, illuminating a wide section in a shaft of bright light.

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He started with the small quatrefoil lights of the Holy Spirit and the crucifixion, proceeding down through the main panels of Christ and his followers on the mountain, with all the way the white shaft of God's transfiguring light growing broader through the fire-and-storm colours of the glass.

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After only a few minutes, the lights of the Lamanai Outpost faded into velvety darkness and the only light was a brilliant shaft from the halogen lamp at the front of the boat.

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