O.C.G.A. § 46-8-270 (2019)

Any person may make a contract in writing with any company owning or operating a railroad in this state to furnish the company with rolling stock or other equipment, deliverable either immediately or subsequently at stipulated periods. The contract may provide that the purchase money for the property, in whole or in part, is to be paid after delivery. The contract may also include an agreement that title to the property shall not pass to or vest in the vendee until the purchase money for the same has been fully paid, notwithstanding the delivery of such property to and the possession of the same by the vendee, but that, until the purchase money has been fully paid, the title to the property shall remain in the vendor and his assigns.