As of July 2018, the company had 190 locations. Prior to the first store being built, DeVito/Verdi was hired as the advertising agency and creative resource. The company executed the campaign and additional TV advertisements over the course of a number of years in support of the launch and the initial wave of stores.
While CarMax stores focus on marketing used vehicles, the company owns two Toyota dealership franchises located in Kenosha, Wisconsin and Laurel, Maryland that sell new vehicles.
The business model began with no fees, however the model was subsequently abandoned for the current business model after it was determined that customers were not concerned about paying transaction fees for the purchase of a vehicle.
A typical CarMax store is approximately 59,000 square feet (5,500 m2), carries an inventory of 300–400 vehicles, and turns its inventory over eight to ten times a year. On average, a CarMax location employs 40 sales associates. Each car goes through a thorough 125-point inspection process, beyond any state-required inspections, and includes a 30-day warranty and a five-day money back guarantee.
According to wikipedia