General Motors Company, commonly known as General Motors or GM is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker. Current auto brands in the GM portfolio include Buick, Cadillac, Chevrolet, GMC, and Hummer.
Simon Property Group, Inc. is an American commercial real estate company, ranked #1 in the United States as the largest real estate investment trust. Simon is a fully integrated real estate company which operates from five retail real estate platforms: regional malls, Premium Outlet Centers, The Mills, community/lifestyle centers and international properties. It currently owns or has an interest in 393 properties comprising 264,000,000 square feet of gross leasable area in North America, Europe and Asia. The company is headquartered in Indianapolis, Indiana and employs more than 5,000 people worldwide, it is publicly traded on the NYSE under the symbol SPG and is part of the S&P 500.