Apparently some people downvoted you without clicking the link to see that the route is indeed backwards.

I think it’s more that it’s a fairly useless correction which makes no real difference.

You are wrong my dear, it makes all the difference.

Well, Fucking to Petting and back to Fucking is usually about an hour for me.

> I think it’s more that it’s a fairly useless correction which makes no real difference.

You can't assume all roads are two-way/full duplex. It is possible (not sure how frequent) that going from A to B takes considerably longer than going from B to A.

Something that's often not taken into account on Google Maps, but important particularly for cyclists and heavy vehicles, is incline, which can be very different depending on which way you're going.

depending on time of the day, and the location of jobs etc, it may make a lot of difference.