I thought my wife of 45 years does that, I notice it on the open highway the most. Just drives me crazy...
I think you may have misunderstood, perhaps due to lack of information on my part. I "pump" the accelerator during heavy traffic (average speed: going 5-14mph), to force the ice to turn on for a quick pulse, as opposed to draining the battery by semi-creeping forward at 25amps.