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2014 Mercedes-Benz S63 AMG revealed

Mercedes-Benz's AMG performance-car division has officially revealed its new 577-hp S63 AMG ahead of the rapid sedan's public Frankfurt motor show debut in September. Several traditional AMG styling mods distinguish the S63 from recently introduced but lesser S-class models (“S-class Stunner,” Autoweek, May 27). They include a deep new front bumper, chromed blade grille, twin-turbo V8 badges on the side and beefed-up sills.

Drivers of GM vehicles will be able to control car features via smartphone

Drivers of most 2011 General Motors Co. vehicles will be able to use a smartphone to carry out functions usually found on a key fob -- such as remote starting, activating the horn and lights, and remote locking and unlocking of doors. Chevrolet, Cadillac, Buick and GMC, working through OnStar, are developing brand-specific mobile applications than can be controlled on Apple's iPhone and phones using Google's Android operating system.

McLaren upgrades MP4-12C for 2013

The McLaren MP4-12C supercar will get a bevy of updates for 2013, and current 12C owners will have access to most of them at no charge. First and most importantly on the list is a power increase, from 592 hp to 616 hp, a 24-horse bump through engine-remapping. The boost in power helps pull the McLaren to a 10.6 quarter-mile, one-tenth of a second faster than in the previous year model.