With a unique look and a thunderous 645-horsepower, 8.4L V10 engine, this sports car is among the most spectacular models in any category. What's more, it’s an uncompromising car that only offers a six-speed manual gearbox. The ACR version turns it up a notch with racing components. Despite all that, all signs are pointing to 2017 being the final year of the Viper, as Dodge must choose between profitability and prestige.