Gray Line Tennessee is Nashville's Leader in Transportation. From Executive Black Car services to luxury motorcoaches, Gray Line Tennessee provides a safe, reliable, professional experience with a superior, modern fleet. Celebrating 50 years in business, no one knows Nashville better! Explore Music City with local expert guides on Nashville's ONLY open-air, double decker bus, plus the iconic Homes of the Stars Tour, Discover Nashville Tour, and other popular sightseeing tours.