Source : Webster's Revised Unabridged Dictionary (1913)

Motoring \Mo"tor*ing\, n.
   Act or recreation of riding in or driving a motor car or
   automobile.

Motoring \Mo"tor*ing\, a.
   Pertaining to motor cars or automobiles, or to the technology
   of such; addicted to riding in or driving automobiles; as,
   motoring parlance; my motoring friend.

Source : WordNet®

motoring
     n : the act of driving an automobile