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

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.

Fisker reveals hardtop convertible Karma S concept

Alongside the production version of the Karma sedan at the Detroit Auto Show, Fisker debuted the second model to join the Karma range. The Karma S (for Sunset) concept is spawned from the same aluminum spaceframe that underpins the sedan, but loses a set of doors. A retractable hardtop covers the four-passenger interior.

Hyundai Hexa Space concept

Hyundai debuted its Hexa Space concept at the Delhi Auto Expo, where its claimed this design revolutionizes the use of interior space. Externally, the Hexa Space evolves Hyundai's Fluidic Sculpture design language. While its lower body is reminiscent of last year's Curb concept, the more angular surface treatment marks a new direction for the brand.