Some of these are then fed into a prototyping machine, made by Objet of Israel, that can produce a 3-D model in lightweight plastic in minutes.

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By using social tools and lightweight Web apps, travel companies have moved toward a model that lets consumers experience their trips before setting foot in a plane and use discovery rather than search to make their trip, their trip, not a trip.

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There could be an entry level, Bluetooth only model that would primarily be tethered to an iPhone or run lightweight JavaScript apps uploaded during periods of connectivity to the web.

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As a refresher, the Model S is a full-sized five-passenger four-door sportback with a lightweight aluminum body.

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