The more aerodynamic the car is the less splats there should be, as the bugs are more likely to be carried by the flow of air around the car, correct?
Still, there is no doubt that the insect population is in a massive decline.
Still, there is no doubt that the insect population is in a massive decline.
incorrect
As I've pointed out in another comment, research has shown [0] that counter-intuitively "modern cars actually hit slightly more insects."
It's a reasonable hypothesis, however what this research shows is that we would have expected to see more dead insects on cars had populations remained stable.
0. https://www.theguardian.com/environment/2020/feb/12/car-spla...
It depends on what the nature of the airflow around a specific car looks like. Bugs have a harder time than air making a "hard corner" but the mass of air stuck at a hard corner can cause other air to go around in a more graceful way and carry the bugs with them.
Coefficient of drag hasn't improved much since the 90s and most of those improvements have been with regard to the vacuum behind the car so aerodynamics is probably only a contributing factor either way.