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2011 Audi A8 loads up on technology, interior comfort

If you had just the side views of the new, fourth-generation 2011 Audi A8 sedan and its predecessor to look at side by side, the differences appear more subtle than stark. There are the fancy LED headlights and relocated body-side character lines on the new A8, but the roofline and body pillars are mostly unchanged. Inside, though, the change is dramatic.

Mazda 3 (2014)

The third-generation Mazda 3 is the also the third model from the Hiroshima-based company to be developed under its much-flaunted ‘Skyactiv', high-efficiency mantra and its Kodo design language. Outside it's a clear relative of the previous Kodo (Japanese for ‘soul of motion') Mazdas, the D-segment 6 and CX5 compact SUV. Its DRG is familiar from those cars with a deep, five-sided grille with a sharp chrome accent that spears into the wide lamps.

The great British motorway speed limit debate

Associated Press As the government plans a 60mph limit on a 32-mile section of the M1, Britain's speed limits are under the spotlight as never before. The lower limit was announced this week as part of a project to improve air quality in Derbyshire and Yorkshire. If approved, drivers will not be able to exceed 60mph between junctions 28 and 35a between 7am and 7pm.