That's not true at all. AP (at least HW2 AP in my car) does definitely slow down for curves. This is more apparent on surface roads, which have more extreme cur

That's not true at all. AP (at least HW2 AP in my car) does definitely slow down for curves. This is more apparent on surface roads, which have more extreme curves. My car will slow down ~15MPH on one curve, whereas I would only slow myself ~5MPH. It's definitely a part of the system.