Busing was designed to do what ending de jure segregation didn't do. De facto segregation still existed because people went to their neighborhood school and the neighborhoods were very segregated. Many still are. That's why so many that are bused, at least where I live, pass their neighborhood school on the way to where they attend.
It was not about convenience. I understood the principles fine. But if it is you getting up an hour earlier, you would not be happy.