New American supercar, Viper replacement???

Re. ending production of the Viper. That has got to be the dumbest move Dodge/Chrysler/Ram/Fiat could make. Why would anyone stop making any product that they sell every one. Only D/C/R/F. Makes no sense to me. Chrysler has been pulling this crap for years: find something that's good then stop. making it because they can't make 1000% profit. Ever try to get a Ram1500 Express or a Power Wagon or a Dodge Dakota? Ever try to get a body-in-white Challanger?