CARMAX 50 Photos 171 Reviews 6909 Southwest Fwy YelpExperience 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. If you want to find your dream car, head over to Carmax on Southwest Freeway today. Thanks to their Southwest Freeway location, Carmax is a convenient choice for car buyers.