Tonight as we turned into our driveway from the alley, going about 2 or 3 mph, we noticed a slight pulsing in the motor. As I then maneuvered into the garage, I noticed it wasn't doing it in reverse, but when I went back to drive and drove forward, it did it again. It was subtle, but unmistakable (my passenger felt it as well). We're on v4.5 (.55, if I remember correctly). Regen is set to Standard, Creep is off, Steering mode in Standard. I searched the forums but didn't find anyone else reporting this. Anyone have any ideas of what might be going on? Thanks!