Vehicles: wreckers; guidelines for towing rates and practices; provide for. Amends secs. 252a, 252d, 252e, 252f, 252g, 252k, 252l, 676c, 676d & 907 of 1949 PA 300 (MCL 257.252a et seq.); adds secs. 68a, 252n & 252o & ch. IIA & repeals sec. 676c of 1949 PA 300 (MCL 257.676c ).