Depends on what part of the country. Here is Phx, it is not uncommon to have 50 - 70 mile commutes just for work. (Mine is 60). Then tack on evening errands, dinner, etc, and you are already at 100 miles.
Bingo. I suspect that those averages that get quoted also include people who only drive their car on the weekend and commute to work by train. If you drive 200 miles on the weekend your daily average is less than 30 miles a day over the week, but that average has nothing to do with the range you require.