The Dodge Viper (SR I) is the first generation of the Viper sports car, manufactured by American automobile manufacturer Dodge. It was originally tested in January 1989 as a prototype, then later introduced in 1991 as a pace car for the Indianapolis 500, then finally going on sale in January 1992. The SR I began the Dodge Viper model lineup, which would continue on until 2017, consisting of five generations. The SRI was replaced by the updated SRII after a series of updates in 1995.