During a demo, the companies showed how users can push a button on a TV to view snippets of information from the Web and push another button for an up-close look.

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Kick off your shoes, put your feet up, push the button.

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With a push of a button, a menu popped up offering further information, downloadable from the web, including video reviews and blog discussion.

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Waking it back up requires the push of any button or the jiggle of the joystick.

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' He said 'Travis, let's go buy 10 Mercedes S-Classes, let's go hire 20 drivers, let's get parking garages and let's make it so us and a hundred friends could push a button and an S-Class would roll up, for only us, in the city of San Francisco, where you cannot get a ride.

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This means that, with a Bluetooth-enabled speaker like the ones shown here, playing your music without wires or a docking station couldn't be simpler: Push a button on the speaker, select it when the speaker's name pops up in your gadget's Bluetooth menu and music begins streaming instantly.

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Push the backlit engine-start button and the dashboard air vents automatically rotate open while the rotary shift knob rises up from the center console.

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