Or maybe the massive increase in car usage, globally, has simply eradicated large percentages of flying insect populations? I mean, think about it, for decades

Or maybe the massive increase in car usage, globally, has simply eradicated large percentages of flying insect populations? I mean, think about it, for decades we've been building highways, which also have become increasingly more busy with car traffic. So not only did we increase coverage of these massive "fly swatters", we also keep increasing the rate at which they swat insects. Doesn't need to be the only factor, but coupled with the massive use of insecticides, and the loss of natural environments, it might as well be a very contributing factor.