Slopes and Movement

[Blackcloud6]

Please explain.

If the vehicle is only going to traverse 20 or 40 meters of hill at 10% grade, the time it takes to do so within the framework of a 15-20 minute turn wouldn't matter to add extra movement costs.

And as triangular_cube points out, PG hills do not represent "sharp changes" in elevation.  

Nevertheless, reality arguments aside, we now know, from AP, how the rules on this matter are to be played.