Photos: Chasing the X Prize Cup

Summary: Three competitions with $2.5 million in prizes for future space technology highlight this year's Wirefly X Prize Cup.

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Rocket plane

The Rocket Racing League, advertised as NASCAR in the sky, will show off the Mark-1 racer. Organizers are building planes to race on a 3D racetrack in the sky--complete with television and ads galore. Shown is a prototype of a Rocket Racer.

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Topic: Telcos

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