Driving Sports Extra! visits the 2014 SEMA Show in Las Vegas. Includes the Garrett Turbo Rocket Bunny Nissan GT-R, Mazda unveiling its new 2016 MX-5 Miata World Cup racer and Injen Technology gives a first look at their new intake and exhaust for the 2015 Subaru WRX STI. Plus: Red Bull Global Rallycross practice session under The Link.