Bocatech Bt5ledsw1-2ckt 2 Channel, 5adc Per Channel on 2040-parts.com

NASCAR: Sprint Cup stars in Pennsylvania, Nationwide Series runs in Iowa

NASCAR's three-race, two-venue weekend has a somewhat different face now that Carl Edwards has re-signed with Roush Fenway Racing and Brad Keselowski has been told to skip the weekend's Nationwide Series race in Iowa. And what's with those big-time Sprint Cup stars running the Camping World Truck Series race at Pocono Raceway? Edwards is at Pocono all day Friday and part of Saturday to prepare for Sunday afternoon's Good Sam Emergency 500.

McLaren MP4-12 650S hits the Web ahead of official Geneva reveal

Images of the new McLaren MP4-12 650S have leaked to the Internet ahead of a planned unveiling for the British supercar at the Geneva Motor Show in early March. Created in response to customer demand for an edgier version of the McLaren MP4-12C offering greater levels of driver engagement, the 650S runs a more heavily tuned version of McLaren's twin-turbocharged 3.8-liter V8 direct-injection engine producing a claimed 25 hp more than the variant used by standard sibling for a total of 641 hp (as its name suggests 650 ps -- metric hp). Further details remain scarce ahead of the MP4-12C 650S's official public unveiling in Switzerland two weeks from now, although information passed on to prospective customers at a private presentation of the new two-seater held last week suggest it is also in line to receive a series of modifications to its seven-speed dual clutch gearbox, suspension, steering, brakes and aerodynamics -- all aimed at providing it with a more aggressive nature and added racetrack ability.

Mercedes C-class (2013) gets new engine, updated trim

The BMW 3-series is the de facto small exec choice, right? Not if Mercedes can help it. To fight the brand new Three, Merc has set up an all new trim structure for the C-class, and added a fleet-friendly engine to the C180.