I drive mostly highway miles, at the speed limit (65). the in-car range estimates are always vastly optimistic in my model s, unless I go to pains to keep the range up (range mode, drive slower than the speed limit, be very careful about using the accelerator, etc.)
I only charge the car about 60% full. Drive around 45 miles round trip every day, which takes about 65-75 miles of ”estimated range.” Every once in awhile I forget to plug it in, so I need the car to have 90 miles of actual range when charged to 60%.
Never have range anxiety or anything, given that the car, when new, had a supposed range of 300 miles. I’ve only had to use superchargers when doing weekend trips or the like.
(Of course, the estimated range to actual range ratio has changed over the years, both because of battery aging and because Tesla has modified its formulas several times)