Timken 512231 Rear Hub Assembly on 2040-parts.com

GM delays innovative new diesel truck engine

General Motors' deteriorating financial situation has caused the company to delay one of the most advanced engines that it has ever designed, a 4.5-liter diesel for light-duty trucks. "We have to make tough decisions right now," GM Powertrain spokeswoman Susan Garavaglia said. Truck enthusiasts were eagerly awaiting the engine, which would have started production next fall at GM's plant in Tonawanda, N.Y.

Mercedes E63 AMG S (2013) priced from £83,470

Mercedes has announced the hottest E-class you can buy, the E63 AMG S, will cost from £83,470 in the UK from June 2013. In uprated 'S' guise, the 577bhp/580lb ft exec saloon monster can only be ordered with 4Matic all-wheel drive in left-hand drive markets, but the UK gets only rear-drive cars. CAR has already tried the E63 AMG S in 4Matic form: click here for our full review.

Concept Car of the Week: Volvo Tundra (1979)

With Volvo beginning a new chapter in its design history with the Concept Coupé, it's interesting to look back at another Volvo coupé concept from 1979 – the Tundra. At the time, the Swedish manufacturer built large and relatively pricey cars that were neither really luxurious nor real 'people cars'. The 340 series began the brand's expansion towards more affordable models and proved to be very successful worldwide.