google can detect an Amish person in the horse-drawn carriage, reliably, by the small decrease in speed, and the slight "moving over" in the lane, by the deluge

google can detect an Amish person in the horse-drawn carriage, reliably, by the small decrease in speed, and the slight "moving over" in the lane, by the deluge of barely-affected traffic. The red dot drudges along blissfully ignorant, unaware of its existence in the virtual, ethereal plane.