Motor vehicles. Amending District of Columbia traffic act, report to accompany S. 3261 [to amend paragraphs (b), (c), and (d) of sec. 6 of District of Columbia traffic act, 1925, as amended, so as to establish in department of vehicles and traffic an office of record for purpose of recording and releasing liens and encumbrances on motor vehicles and trailers, or any equipment or accessories affixed thereto]; submitted by Mr. Overton.