CarMax 6909 Southwest Fwy Houston TX 77074 Loc8NearMeExperience 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. Take a trip to Carmax on Southwest Freeway and find the car that suits your style. With a location on Southwest Freeway, Carmax is easily accessible for all car enthusiasts.