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Mercedes SLS AMG E-Cell (2010): the electric SLS

Following the unveiling of Tesla's updated Roadster 2.5, Mercedes is showing off its iteration of an all-electric sports car: the SLS AMG E-Cell. While the regular SLS pumps out 563bhp and 479lb ft from its 6.2-litre V8, the SLS E-Cell has four synchronous electric motors, powering all four wheels for a combined output of 392kW (equivalent to 526bhp) and a mammoth 649lb ft of torque. Crucially, all of that power is accessible from zero revs, allowing the E-Cell to sprint to 62mph in four seconds dead.

Awesome Astons! DB9 enhanced for 2011, pricing details revealed

Messing with near-perfection can be a dangerous proposition, so Aston Martin used a light but deft touch to refashion the DB9 for 2011. The British sports-car maker updated the car with subtle styling and underskin improvements. The DB9 goes on sale in the United States this summer with a starting price of $188,965 for the coupe and $202,465 for the open-air Volante.

Design Essay: Are smart roads just around the corner?

In order to remain relevant, the car must constantly evolve. But while almost all attention focuses on four wheels, the roads that facilitate an automobile's progress have remained relatively unaltered since Eisenhower formed the National Highway system in the 1950s. With environmental concerns getting ever higher on the agenda, there is an opportunity to think outside the (metal) box and rethink the road, making it as smart as the vehicles and devices that travel upon it.