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

Algae-powered street lights eat CO2

Algae powered street lighting (great Photoshop) A French biochemist – Pierre Calleja – has developed a street lighting system using micro algae that absorbs CO2. The need to reduce CO2 in the atmosphere is contentious - to say the least – but as long as governments use CO2 as a stick to beat motorists and empty their bank accounts it’s sensible to look at ways of ‘balancing’ the CO2 emissions of cars. French biochemist Pierre Calleja thinks he’s come up with a solution that would neutralise CO2 emissions from cars by cancelling it out with his micro-algae lighting.

Mazda MX-5 Miata

For only the fourth time since the first was introduced 25 years ago - when it reignited the small sports car market - there's a new Mazda MX-5 Miata. Mazda's aim this time was to strip away much of the bulk that had accumulated over the years, recapturing the essence of a compact, light and affordable roadster. The subtext is that the MX-5 Miata has become a car more often bought by women in their 60s, rather than the young males it was originally intended for.

2015 Chevrolet Tahoe PPV will look mean in your rearview mirror

We weren't particular surprised by Chevrolet's unveiling of a Tahoe Police Concept Car at SEMA, as it seemed a perfectly natural use for the truck, and we weren't surprised today when news broke that the Tahoe was going to be offered in law-enforcement spec to police agencies around the country. With stiff competition from the Dodge Durango and the tremendously popular Ford Explorer PPV, a cop-spec 2015 Chevrolet Tahoe, makes perfect sense. The Chevrolet Tahoe PPV will debut with the new fuel-efficient 5.3-liter direct-injection V8 engine, which produces 335 hp and 383 lb-ft of torque.