I'm skeptical of the mileage thing, Scholar. My normal work round trip is about 16 miles daily, with a little more if I go get gas or groceries after work. But I have another, older, car too, and I switch off weekly.
16+ miles daily keeps them both charged perfectly fine normally. The only issue I ever had was with the old car, and its battery was just getting old and weak. A new battery fixed it right up.
2016 V8 VIP+, black with white interior