The high-performance Cadillac CTS-V has been unveiled a few weeks prior to its official launch at the 2015 Detroit motor show.
Under the CTS-V's new bulging carbonfibre bonnet there's a version of GM's 6.2-litre supercharged V8, which has been tuned to churn out 477kW of power and 855Nm of torque. Power is sent to the rear wheels via an eight-speed automatic transmission and an electronic limited-slip differential.
This, Cadillac is more than happy to point out, means that the CTS-V is more powerful than the 430kW/800Nm 5.5-litre turbocharged V8-powered Mercedes-Benz E63 AMG S and the BMW M5 with its 423kW/680Nm 4.4-litre turbo V8.
According to GM, the CTS-V is good for a 0-60mph (0-96km/h) time of 3.7 seconds and a top speed of 323km/h.
Stopping power is provided by a high performance Brembo brake package with a 390mm front discs matched with six-piston calipers and 365mm rear discs paired with four-piston calipers.
The CTS-V rides on 19-inch alloy wheels clad in Michelin Pilot Super Sports tyres, as well as a firmer suspension setup equipped with Magnetic Ride Control shock absorbers.
Structural rigidity has been increased by 25 per cent thanks to the addition of multiple braces throughout the car's body, a new aluminium shear panel at the front and a strengthened rocker bulkhead.
Visually the CTS-V is distinguished from lesser models by its reworked aero package and flared fenders, which are required to house the car's wider front and rear track.
Buyers who opt for the CTS-V's optional carbonfibre aero pack (pictured above) will gain even more aggressive front splitters, bonnet vents, rear diffuser and rear spoiler.
On the inside, the CTS-V features grippier seats and a performance data recorder as standard; Recaro front seats are an optional extra.