What you see when lying on yer side in da bed of a cruising pickup truck and watching da "rhythmically-wavy" line of da roadside utility-service cables going past.
If it had been da infamous "Hot Rod Lincoln" (as opposed to just a "regular" or "everyday" vehicle traveling at a "normal" 50-to-60 miles per hour) dat an observer had been riding in when watching da passing electric-wires, said wires would probably have resembled a "rapid heartbeat" EKG-line rather than just a moderate-speed "Pole-dowwwwwn,uhhhhhp-pole-dowwwwwn,uhhhhhp-pole..." --- da song specifically states dat "da telephone poles looked like a picket fence".