Every time I run across this thread's title -- and it's not incorrect -- I think of the limiter function on the cruise control, and wonder why anyone would want to eliminate it. 😄 But I too am wondering about the speed governor at the top end. The controller rolls off speed well below the car's capability; it should easily be able to keep pulling until maximum motor speed (and perhaps when aero drag starts slowing acceleration). I'm quite certain BMW chose to roll it off and limit speed to 150 km/h to prevent us from killing the battery.