That calculation does not work at all. 300 miles (presumably WLTP) range has nothing to with 300 miles of actual driving.
Additionally range dictates how often you have to charge. This does not matter if you can easily charge at home, but when you have to do it at public infrastructure it is obviously a hassle, which is increased with lack of range.
Additionally range dictates how often you have to charge. This does not matter if you can easily charge at home, but when you have to do it at public infrastructure it is obviously a hassle, which is increased with lack of range.