"I mean, you're talking about two different responsibility levels, " he explains over a cup of coffee at a cafe in Chicago.

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Weaver, 63, never hesitated about doing the role: "I didn't, " she says laughing over coffee at a midtown cafe.

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Nearly every cafe serves Kaffee und Kuchen (coffee and cake) at 3pm sharp.

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Ferrell envisions a world, for example, where your routine morning coffee would be automatically ordered at the exact time to have it waiting for you at your local cafe on the way to work.

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The reception shares space with the cafe-restaurant, serving coffee and homemade cakes all day, then stepping things up at night when traditional Icelandic ingredients such as lamb, langoustine, reindeer and fish come with a polished contemporary touch.

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Of course, finding the rhythm in Vienna can also mean a quiet stroll through the Baroque streets at night, a meander along the banks of the Danube or just stirring a cup of coffee in a cafe.

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