CarMax in Houston TX Hours Locations Chamber of CommerceExperience the best car buying process in town at Carmax on Southwest Freeway.Looking for a specific make or model? Carmax on Southwest Freeway has the car you're looking for. Don't miss the chance to see Carmax on Southwest Freeway's exceptional collection of cars. With a location on Southwest Freeway, Carmax is easily accessible for all car enthusiasts.