If the ridership isn't high enough at a period of time, send out a private car for the person requesting a ride. On non-rush-hours, buses in America often oper

If the ridership isn't high enough at a period of time, send out a private car for the person requesting a ride. On non-rush-hours, buses in America often operate almost or completely empty. It would be cheaper to just give taxis to people who need it at that point.