Drone follows rollercoaster

This is a racing drone. These are not "mad" skills for an experienced racer. Experienced racers have "mad" skills by definition. Ever see the guy playing with the underway train? He flies into the open door of a boxcar, flies between cars, flies under the train... it's all quite mad. It's pretty funny when he motors on up to the the engineer's open window. The engineer gives him a dirty look and slams the window shut.

Racers have mad skills!
 
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