My dad and I take (usually) yearly road trips west to visit various national parks. We've been doing this for nearly 2 decades now. We'll typically drive through the night with just a short, few-hour stop at a rest area if we are both too tired to drive.
I distinctly remember some of our earlier trips where by the time we got fuel in the morning after driving through the night there were SOOO many bug guts all over the front of the car no amount of car washes would get them clean.
Our last trip to South Dakota/Colorado there was almost none and I was actually thinking about this. It is very unsettling...something is changing and it's not for the better...