Concept cars often are testing prototypes for automobiles that will be sold to the public in the next year or years to come. Such was the
case of the Dodge Viper. At first only two prototypes were manufactured and this led Dodge to see that simply using a truck engine in a car body
wasn't going to meet the standards they expected for the car. Carroll Shelby, the man who had a large influence in the design of the Ford Cobra Mustang car, actually
help plan the first Viper. Observers could see that the Viper was to be a main competitor for the Cobra. At the time Lamborghini was an affiliate of
Chrysler and the firm was asked to refine the Dodge V10 truck engine that the Viper was using at the time. The engine was too heavy to be used in
a smaller sports car. Lamborghini completed the task and the V10 became the heart of the Viper.
Dodge has used the introduction of concept cars at important annual car shows. It brought out a concept Dodge Challenger at the 2006 Detroit Auto Show that closely
resembled the car it was modeled after, the famous same name car of the 1970's. Dodge was testing the public to see the reaction to a car with exterior design appearance very
similar to its older sibling. The fans reacted in a positive manner and Dodge brought out final production models in 2009.