The Rolls Royce Silver Shadow was produced in various forms from 1965 to 1980. It was the first Rolls-Royce to use a monocoque chassis, a response to concerns that the company was falling behind in automotive innovation. Aside from a more modern appearance and construction, the Silver Shadow introduced many new features such as disc rather than drum brakes, and independent rear suspension, rather than the outdated live axle design of previous cars.