NASCAR introduced a new car style known as the "Car of Tomorrow" for use in sixteen races in 2007. This car was the result of a design program that started after the death of Dale Earnhardt in the 2001 Daytona 500. It was intended to offer improvements in safety, performance, competition, and cost efficiency. Plans for a partial schedule in 2008 were expanded to full usage after race results and owner feedback led to acceptance of the new car. Some drivers, however, offered criticism over the decision, thinking that the new design led to boring, uncompetitive races.