One automobile dealership in Lower Carbon County has a new owner and another will change hands early in the new year, bringing to three the number of dealerships sold in the area since October. Solt Motor Sales Inc., Franklin Township, will be called Lehigh Valley Nissan effective Jan. 5. Sander Olds-Buick-GMC Truck, Aquashicola, was acquired Dec. 24 by George Miller of Waterbury, Vt. Early in October, Moyer and Haupt Motors, Lehighton, was sold to Bennett Enterprises, which operates three other dealerships in the Lehigh and Northampton Counties.