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Samsung SM5

Samsung Motors, the Korean subsidiary of Renault-Nissan Alliance, recently released the newly-redesigned SM5 sedan for the Korean domestic market. Based on the Nissan Teana, the SM5 is the second best-selling vehicle in Korea's D1 segment, ceding the top spot to Hyundai's Sonata. The most significant change to the exterior design is visible around the front bumper region, where the strong 'chin' (lower section of bumper volume) displays both solid and aggressive styling cues when viewed from the front.

A closer look at the 2015 BMW M3 sedan and M4 coupe: Turbocharged performance is gonna cost you

By the time the 2015 BMW M3 sedan and M4 coupe were revealed at the Detroit auto show, we already knew a lot about what to expect from the Roundel's newest generation of high-performance driving machines. It was no secret, for example, that the new M3 sedan and its two-door counterpart, the M4, will be down two cylinders and a few hundred pounds from their predecessors. Now that we've had a chance to get a look at the cars in production trim, here's a closer look at what's under all the aggressively vented fascias, spoilers and M badges.

Volvo tests flywheel technology to cut fuel use

Volvo is testing flywheel technology--being used in Formula One racing to give cars an extra boost--as a technology that could help cut fuel use in future cars by as much as 20 percent. Flywheels recapture energy normally lost as heat during braking. That energy can then be used to help propel the car.