CarMax in Houston TX Hours Locations Chamber of CommerceExperience the best car buying process in town at Carmax on Southwest Freeway.Whether you're interested in SUVs, sedans, or trucks, Carmax on Southwest Freeway has got you covered. Take a trip to Carmax on Southwest Freeway and find the car that suits your style. Thanks to their Southwest Freeway location, Carmax is a convenient choice for car buyers.