 Facts matter. The WTOP Traffic Center. Tracking the top trouble spots. The biggest backups. The major incidents. The slowest traffic. WTOP Traffic. Every 10 minutes, on the 8th, and when it breaks. In 1997, the Byer family embarked on a thrilling adventure they called The Great Experiment, also known as Land Rover Alexandria. Fueled by generations of dedication and a passion for exceptional service, they set out to create a dealership unlike any other.