The temperature was in the mid-90s that day, and 17 of the 31 runners collapsed, partly because nobody understood the first thing about refueling.

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The trucking industry calls this the "chicken and egg" problem: which will come first -- LNG trucks or LNG refueling stations?

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It took the combined skills of the experienced NASA and CSA robotics controllers to pull off this first-of-a-kind space refueling demonstration successfully and without any mishap.

ENGADGET: Canada's Dextre robot refuels faux satellite from the ISS in first-of-a-kind test