Discovered this while going through the drive through line yesterday. While barely pressing the gas pedal, I felt a vibration/grinding feeling in the gas pedal. I tried this a few more times after and indeed it happens every time. I have not felt this before because the pressure applied to make this happen truly has to be about the smallest amount you could apply. I'm not familiar with how drive by wire pedals work but I'm guessing because the pressure is so low, there is some system that is having difficulty determining if it should engage or not and that is resulting in the vibration. Has anyone else noticed this? Would you mind trying it? Thanks!