Too Fast for Automatic Doors

I've begun to notice that when I walk at my normal pace (think deranged New Yorker on speed), I am too fast for many of those automatic doors you see at big stores. It frequently occurs that as I approach an entrance to, say, a big drug store, I have to stop just before walking into a partially opened door. Kind of annoying, really.

My general displeasure with slow automatic doors, however, pales in comparison to my near-violent displeasure with slow people walking or standing in front of me on crowded streets. But I digress.