The 2016 SEMA Show is upon us and the Las Vegas event is once again packed with hot cars and aftermarket parts. Nearly all major automakers brought at least one new product or concept to SEMA. Mopar is once again among the brands that have set up a booth at the event and, as usual, the FCA-owned company has plenty of concept cars on display. They all have all sort of exciting features to brag about, but none is as spectacular as the Shakedown Challenger.