2014 Mercedes SLS AMG Coupe Black Series puts on the blitz

Yeah yeah, we live in a new era of environmental responsibility where all of us must embrace a future of slightly slower yet vastly more efficient vehicles sipping liquid fuels when they're not using electrons instead. And yet in some precincts the world's horsepower wars rage without ceasing, as this latest rocket launch demonstrates: the Mercedes-Benz SLS AMG Black Series, the fastest car to wear the AMG badge outside a track.

For the Black Series upgrade, Mercedes has revved the 6.3-liter V-8 to ever-higher speeds, pushing total power to 631 hp, a 68-hp bump over the plain SLS AMG. Combined with revised 7-speed automatic transmission, lighter wheels, revised suspension and other tricks allows the Black Series SLS to hit 60 mph in 3.8 seconds.