Well, the flatness around the 40mph mark is definitely getting old to me. It's very apparent, and I hope they can feel and see this when the tech. drives it. It' getting old, really, because 40 - 45 is a nice crusing speed that I find myself going a lot on city streets, and when you're ready to speed up just a bit, with this issue, you have to really give it a lot more gas, just for it to shift to the next gear. There's no reason for this, and passengers are like, ummm, what are you doing, there's a car in front of you.
Keep us posted please, on you vehicle's repairs.