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Autoweek in review: Cadillac tests the ELR, we explore “automotive truisms,” and give thoughts on a 2012 Mercedes-Benz

The upcoming Cadillac ELR was spotted on the road, testing in camouflage. Autoweek explores “Automotive Truisms” with an Aston Martin Vantage V12. Enjoy the sights and sounds of the Aston on-track.

BMW 5-series is in line for the company's new triturbo diesel engine

Details leaked from a dealer conference held in Holland this week suggest that BMW's upcoming 550dX will be the first recipient of the German carmaker's new high-tech triturbo 3.0-liter inline six-cylinder diesel engine. The new engine, which also is destined for the new X5 xDrive50d and X6 xDrive50d models, is claimed to produce 376 hp and more than 516 lb-ft of torque--some 70 hp and more than 74 lb-ft more than the most powerful version of BMW's existing twin-turbocharged 3.0-liter inline six-cylinder diesel engine, as found in the X5 xDrive40d. The radical new engine, which is rumored to use two traditional exhaust-blown turbochargers in combination with an electrically driven turbocharger to add low-end response, is planned to be offered exclusively with an eight-speed automatic gearbox and four-wheel drive.

Europe’s most congested cities revealed

Drivers in Yorkshire face a delay of 36 minutes for every hour they drive in peak periods, according to a new study by sat-nav firm TomTom. It's enough to make Leeds-Bradford the seventh most traffic clogged city in Europe. The most congested cities in Britain While Leeds-Bradford was labelled the most congested city in Britain, the report also identified London and Birmingham as traffic hotspots.