2013 SRT Viper packs devilish details

The 640-hp V10, the curvy fenders, heck, even the carbon treatments—there are enough spotlight features on the 2013 SRT Viper to outfit two or three sports cars of lesser pedigree. While the potent engine and the striking design are clearly the signature elements of SRT's macho machine, there are a few subtle design cues lurking inside for sharp-eyed enthusiasts. Let's call them Easter eggs, and they're intricate yet intriguing.

Bentley at Geneva: Bentley Mulsanne – all the details

Bentley has release comprehensive specs for the 2010 Mulsanne Bentley has now finished producing cars of the pre-VW era. The last of the old-school Bentleys have now rolled off the production line and we now have a clean sweep of modern-day Bentleys. The Continental GT has spawned umpteen variants – including the Continental Supersports Convertible which is also here at Geneva – but the real focus at Geneva is on the replacement for the venerable Arnage.

Volvo cars will be able to tell if you're driving tired

Volvo is currently testing in-car sensors that can monitor driver alertness -- ones that can determine if the driver is becoming tired and inattentive. A number of simple systems that basically generate warnings after a certain period of nonstop driving are now available in cars. They take into account the average speed and time elapsed since the vehicle was started.