The Russian docking mechanism had to be taken off the vehicle so a faulty switch could be replaced.

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The units come together and join by way of a novel conical docking mechanism, allowing them to form a single, more complex robot.

ENGADGET: Modular robots join forces to search and rescue

In an unfortunate twist of fate, however, the reference model wasn't able to charge -- despite an adapter cable being flown in especially from Europe -- so we were unable to see that docking mechanism (or that Haswell chip) in action.

ENGADGET: Intel's Haswell-powered 'North Cape' reappears, promises 10 hours of battery life in tablet-mode (hands-on)