Jonny reignites the flames of American muscle with a face-off between the all-new Ford Mustang GT and the Dodge Challenger Shakedown. Kristen brings a first look at the Cadillac Escalade IQ, an electric behemoth redefining luxury. She also gets behind the wheel of the Kia EV9, testing its potential to bring the EV revolution mainstream with its combination of features and relative affordability.