SAN FRANCISCO, CALIF.—The makers of propeller blades for drones set up an air race course that loops in and out of a warehouse full of obstacles. The object lesson here might well be, “if you can’t beat ‘em, beat ‘em up.”
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SAN FRANCISCO, CALIF.—The makers of propeller blades for drones set up an air race course that loops in and out of a warehouse full of obstacles. The object lesson here might well be, “if you can’t beat ‘em, beat ‘em up.”