Slightly off topic:
You wouldn't think that the aerodynamic drag of a conventional antenna would amount to much,
but back in the 1990s the chief engineer on the GM EV1 project came back to Duke Engineering school where he had previously gotten a Masters degree and gave a talk about that unique electric car and the good and bad things that occurred during its development.
He remarked in the talk that the original conventional upright antenna reduced the range of the car by 3 miles so they hid it.

Several cars now put shortened and leaning back antenna at the top rear center of the roof above the rear window,
and I have wondered if that position actually is a trick to improve the aerodynamic flow over the sloping rear, kinda like a vortex generator.

My 1995 Ram had a black smooth flexible rubber 'damper' overtop the metal whip to reduce,
but not totally get rid of,
the wiggle oscillations at certain wind speeds.

In later years the Chrysler antennas all got welded-on 'climbing vine' spines that totally eliminated the oscillations.