Johnny approaches a detour for the westbound lane of Interstate-40. Usually, he drives this section of 1-40, which is a straight road that runs east and west, every day on his way home. He begins his detour driving 2 miles straight south, then 1 mile straight east, then 4 miles straight south, then 6 miles straight west, then 3 miles straight north, then 1 mile straight west, and then 3 miles straight north. How many more miles did he drive by taking the detour than if he could have stayed on the highway?
(F) 6
(G)12
(H)13
(J)14
(K)20
