I went through a similar change from my sparkier first years of driving as a teen and early twenty something to now. The motivation incidentally wasn't to impr

I went through a similar change from my sparkier first years of driving as a teen and early twenty something to now. The motivation incidentally wasn't to improve economy or avoid citations. It was mostly to reduce the frustration of feeling like I was constantly being impeded by others who weren't interested in driving as aggressively as I had been, and partially an increased interest in safety. It worked. Driving is much less stressful with cruise control.