Suppose the current average cost per mile for operating a car is $0.40. Susan is required to drive to a client's office that is 50 miles away (100 miles round-trip) She can use her own car and be reimbursed $0.30 per mile or use a company-owned vehicle Suppose the current average cost per mile for operating a car is $0.40. Susan is required to drive to a client's office that is 50 miles away (100 miles round-trip) She can use her own car and be reimbursed $0.30 per mile or use a company-owned vehicle