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Autoweek in review

On Monday, Ford and GM announced they would work together on nine- and 10-speed transmissions, we found out how to outrun a dust storm in a Lexus LFA and legendary driver Stirling Moss made some interesting comments. The embargo on the Jaguar F-Type broke on Tuesday, we learned about a documentary on the Pebble Beach Road Races and Porsche showed off its 911 RSR for race duty. On Wednesday, pictures of the next Lamborghini Aventador slipped out on the Web, the Mercedes GLA concept was revealed and the Flat Rock, Mich.

The Technology Behind F1 Cars: Aerodynamics [w/Video]

Ferrari's latest video in its ‘Discover the technology of Formula 1' YouTube series sees Scuderia Ferrari's deputy design chief Simone Resta focusing on the chassis and side pods' design and its effect on the aerodynamics. This video follows two episodes, the first of which introduced viewers to the concept of aerodynamics – which is the subject of the series' first part – while the second took a look at the design and effect of the car's front wing and nose. The great thing about this series is you don't have to be a genius – or even know your way around an F1 car – to get to grips with the concepts or terminology.

BMW Concept5 X5 eDrive revealed. It’s a plug-in Hybrid X5

The BMW Concept5 X5 eDrive (pictured) will debut at Frankfurt The arrival of the BMW Concept X5 eDrive ahead of its debut at Frankfurt next month doesn’t preview and immediate addition to the X5 range of a plug-in hybrid, but it does show what will be on offer in a year or two. Just like yesterday’s Mercedes S500 plug-in hybrid, the X5 eDrive is another example of how car makers have developed their way round CO2 taxation levels by throwing electric motors at ICE engines to create a car that offers impressive emissions and economy on official tests. In the case of the X5 eDrive that means a four-cylinder twin power ICE engine (BMW aren’t saying, but we’re assuming its a petrol engine), a 94bhp electric motor and a lithium-ion battery under the boot all working together to produce an X5 that is capable (at least in official tests, which is all that matters) of 74.3mpg and emissions under 90g/km.