McElwain Motor Car Company Share: Automotive McElwain Motor Car Company Visit Website 911 Lawrence Ave Ellwood City, PA 16117 (724) 758-4500 About Map About McElwain Motor Car Company is a new Chevrolet dealer that sells new and used vehicles and services all types of vehicles. We are located on the main street of Ellwood City. What's Nearby? Distance: 5 10 15 20 25 50 mi.