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Mercedes F125 concept (2011) at Frankfurt motor show

Mercedes today unveiled the F125 concept car - a car bearing the three-pointed star's F name to demark it as a tech testbed, and the 125 to mark Merc's 125th anniversary in this four-wheeled business. It's a hydrogen fuel-cell vehicle, and Merc claims a punchy 1000km (620-mile) range. But the scientists here are proud of the cutting edge lithium sulphur batteries, used to store energy created by the fuel-cell.

BMW M6 Gran Coupe: Offical

After an early leak of photos, the new BMW M6 Gran Coupe – complete with 4.4 litre bi-turbo V8 and 553bhp – arrives ahead of a Detroit Auto Show debut. Just as expected, the M6 Gran Coupe comes with BMW’s 4.4 litre twin-turbo V8, delivering 553bhp to the baqck wheels and driving the M6 to 62mph in 4.2 seconds. And, if our previous experience of the 6 Series Gran Coupe is anything to go by, providing sublime handling and dynamics in the process.

2014 Jeep Cherokee delayed?

Chrysler Group late today took the unusual step of postponing a planned media drive of the 2014 Jeep Cherokee scheduled for early next month but vowed that "vehicles will still be in showrooms in September." The media event -- in which waves of national and foreign journalists were to gather in Seattle between Aug. 8 and 14 to drive the Cherokee for the first time -- was delayed until at least the first half of September, according to an email from the automaker. "Over the last couple of weeks during final quality and durability testing, we have discovered the opportunity to further improve powertrain calibration" in the Cherokee, the company said.