Straightline Performance 134-163 Lightweight Carbon Silencer on 2040-parts.com

Ford preparing fastest ever four-door—in Australia

Ford's struggling Australian outpost is set to unleash its fastest-accelerating car yet in the form of a limited- edition version of the four-door Falcon GT Boss 335 sedan running various chassis-based performance enhancements, according to Australian media reports. Known internally at the company's Ford Performance Vehicles division under the code name Panther, the Blue Oval's supersedan is set to run the same supercharged 5.0-liter V8 as the standard Falcon GT Boss 335—itself a locally developed version of the Mustang's 90-degree Coyote unit with unique cylinder heads and renamed Miami. It delivers 449 hp at 5,750 rpm and 420 lb-ft of torque at 2,200 rpm.

Detroit Auto Show roundup

The 2012 NAIAS in Detroit, MI has proved to be exactly the dose of salts the US auto industry so desperately needed after a few very lean years for the event. Numerous concept and production cars made their debuts in the halls of COBO and, as ever, Car Design News was on hand to provide our in-depth live show coverage. Here's a full rundown of our reportage from NAIAS 2012: Acura Acura NSX Concept: Living up to the name Cadillac Cadillac ATS: Finally breaking into the premium mainstream?

Top Gear Live schedules extra show

TOP GEAR Live has announced an extra show in Glasgow to meet huge demand, after the initial run of three performances sold out almost immediately. Tickets for the shows at Glasgow’s SSE Hydro venue went on sale on Friday at 9am, but were completely sold out within hours. Two shows had initially been scheduled for Saturday January 18, with one on Sunday January 19.