Costs per mile traveled*** Costs per mile traveled*** 20% of operating costs Costs per mile traveled*** Costs per mile traveled*** 20% of operating costs 20% of operating costs Source on cost per passenger-mile Costs per mile traveled*** Costs per mile traveled*** automobile travel is cheaper per passenger mile Source on cost per passenger-mile Source on cost per passenger-mile 20% of operating costs Also reference AntiPlanner 20% of operating costs opponents