a POV instead? You will be reimbursed on a mileage basis, plus per diem, not to exceed the total constructive cost of the authorized method of common carrier transportation plus per diem. Your agency must determine the constructive cost of transportation and per diem by common carrier under the rules in 301-10.310 . 301-10.310  What will I be reimbursed if I am authorized to use a Government owned automobile and I use a privately owned automobile instead? You will be reimbursed based on a constructive mileage rate limited to the cost that would be incurred for use of a Government automobile. This rate will be published in an FTR bulletin available at http://www.gsa.gov/ftr . If your agency determines the cost of providing a GOA would be higher because of unusual circumstances, it may allow reimbursement not to exceed the mileage rate for a POA. In addition, you may be reimbursed other allowable expenses as provided in 301-10.304 . Subpart E?Special Conveyances 301-10.400  What types of special conveyances may my agency authorize me to use? (c) Any other special conveyance when determined to be advantageous to the Government. 301-10.401  What types of charges are reimbursable for use of a special conveyance? Actual expenses that your agency determines are necessary, including, but not limited to: (a) Gasoline and oil; (b) Rental of a garage, hangar, or boathouse; (c) Feeding and stabling of horses; (d) Per diem of operator; and (e) Ferriage, tolls, etc. 301-10.402  What will I be reimbursed if I am