Lego CVT Swerve Drive
Channel: 'Oly Cow Robotics
Date: 2014-08-06

That's right, it's remote controlled serve drive outfitted with four independent continuously variable transmissions. You can find an older video of Lego Swerve drive without the CVTs on it if you want to see it drive much faster. 

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The 'Oly Cow: Outstanding in our field.