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

A look at Cadillac future products

General Motors has green-lighted the development of a large flagship sedan for Cadillac, sources say, part of its plan to position its luxury brand's lineup to take on the German luxury stalwarts in every key sedan segment. The flagship sedan is to be built on a new rear-wheel-drive platform and arrive by 2015. The long-rumored rwd flagship would challenge the BMW 7-series and Mercedes-Benz S-class and is a key to GM's ambitions to expand Cadillac in China.

Hydrogen Fuel Cell Cars: The Japanese push

Honda Clarity Hydrogen Fuel Cell Car - already in the real world at $600 a month We make no secret of the fact that we consider Hybrid cars a stop-gap solution to reducing reliance on oil. And frankly, unless you drive like a saint you’ll probably find you get inferior performance and poorer fuel consumption out of regular hybrids than you would from a decent eco-diesel. Only when you start to put complex hybrid systems in high-end cars do you start to come up with something that does mitigate fuel use and improve performance.

Nissan says the Leaf EV beats the Chevrolet Volt with 367 mpg

The green car mileage race is now under way, and Nissan Motor Co. isn't impressed by the Chevrolet Volt's 230-mpg claim. The Japanese automaker says its new Leaf electric vehicle gets 367 mpg, or about 60 percent better fuel efficiency.