[Piotrsko]

As I understand it: drag is the moving air gaining then losing energy and becoming at rest again. Stagnant? Perhaps but an odd choice of word.

Moving air takes energy from the device moving it and causes ancillary after effects because air has mass. Even parked cars exhibit drag but it's tiny and perhaps immeasurable but does exist during say tornadoes.

At this point I suspect zero drag in an atmosphere is impossible. Perhaps even in intersteller space. Feel free to prove me wrong. Eventually musks tesla will be parked someplace in the universe and fall into a gravity well.