Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Mercedes S63 and S65 AMG debut at Shanghai

Mercedes revealed the S63 and S65 AMG (pictured) at the Shanghai Motor Show today In yet another demonstration of how important emerging car markets are to premium car makers, Mercedes has chosen to unveil its top two S Class models – the Mercedes S63 AMG and the Mercedes S65 AMG - at the Shanghai Motor Show today. These range-topping S Class Mercedes get the same updates as the lesser siblings (and the Hybrid S400) we told you about a week ago. But this isn’t a new model – just a mid-cycle refresh of the S Class in general.

Diesel joins Porsche Panamera lineup

Porsche has put forward some eye-catching fuel-economy figures for the Panamera diesel--although we may never see the car in the United States. Set to go on sale across Europe in August, the four-door is claimed to return a combined city/highway driving fuel economy of 36.2 mpg in standard guise under European testing procedures. When fitted with optional low-rolling-resistance tires, the fuel economy climbs to 37.3 mpg on the European test--a figure that gives the Panamera diesel a theoretical range of 800 miles on its 21-gallon fuel tank.

One Lap of the Web: falling rocks, falling prices, and a Ford Frontenac?

-- If this isn't the automotive video of the week, then we don't know what is. A car in Taiwan just barely avoids being crushed by a gigantic boulder, whose water and mud bow wave shoves the car a few feet before the boulder even lands anywhere near the car. Watch the top of the hill at the very start of the video.