The muscle car wars continue to heat up as Dodge fires the latest salvo with its 2020 Charger SRT Hellcat Widebody it calls the "most powerful and fastest mass-produced sedan in the world." It's also the near twin of the Widebody version of the Dodge Challenger Hellcat coupe that made its debut two years ago, both models sharing the same 707 horsepower supercharged V-8 engine. The performance brand of Fiat Chrysler, Dodge says its latest muscle car can hit 60 in just 3.6 seconds and top out at 196 mph. Despite increasingly stringent mileage mandates, automakers keep upping their performance game. Ford last week said its new Mustang-based Shelby GT500 Coupe will generate 760 horsepower when it comes to market later this year. General Motors will unveil the first-ever mid-engine version of its Chevrolet Corvette next month. Manufacturers as diverse as Hyundai and Aston Martin are rolling out ever more gutsy models — some turning to electrified powertrains to push the performance envelope.

2020 Dodge Charger SRT Hellcat Widebody Source: Fiat Chrysler

8-speed transmission

The 2020 Dodge Charger SRT Hellcat Widebody's 6.2-liter V-8 uses a massive supercharger to deliver 707 horsepower and 650 pound-feet of torque. The engine is mated to an eight-speed automatic that, the automaker says, can improve both performance and fuel economy. The wheels of the Widebody sedan flare out 3.5 inches more than the original Hellcat. That provides room for significantly wider, 20- by 11-inch Pirelli 305/35ZR20, tires and makes it easier for the Charger to grip the pavement under hard acceleration. Spinning tires may look and sound great but waste time when you're looking for a fast launch. The Charger Widebody will also get stiffer springs, larger anti-sway bars and retuned shock absorbers to allow it to handle on a track or on winding roads. And Brembo brakes will help it quickly scrub off speed without fading under repeated hard braking maneuvers.

Fast, faster, fastest

The sedan also uses four technologies, including Launch Control and Line Lock, to make it easier for even less-experienced drivers to achieve fast take-offs. Over recent years, Dodge has been rolling out a succession of fast, faster, fastest variants based on its long-lived Charger sedan and Challenger coupe models — even as it has dropped virtually all other nameplates. The Charger and Challenger are among only three passenger-car models now built by the U.S. side of Fiat Chrysler. The addition of the Widebody could help build demand for the more practical, four-door Charger which has traditionally been outsold by the Dodge Challenger. All told, Fiat Chrysler sold 66,716 of the coupes — in all the various configurations — last year. But that lagged behind the muscle car segment leader, the Ford Mustang. Its 10 different versions racked up 75,842 U.S. sales in 2018.

2020 Dodge Charger SRT Hellcat Widebody Source: Fiat Chrysler

Muscle car wars

Ford hopes to trounce the Challenger Hellcat line when it officially ships the first Shelby GT500s to dealers for the 2020 model-year. It will be the most powerful street-legal Mustang ever to roll out of a Ford plant, at 767 horsepower. GM has yet to reveal details on the new 2020 Corvette, the first-ever mid-engine model known to fans as the "C8." But the top-line version of the 2019 'Vette, the ZR1, makes 755 horsepower and can top out at 212 mph. More and more manufacturers are pushing into the performance market. Hyundai recently launched a sporty sub-brand dubbed "N," hoping to win over muscle car fans on a budget.

Tesla sets the pace