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

Future Audis may time traffic lights for you

Here's a trick efficiency-chasing hypermilers have been using for years: spotting the cycles of stoplights from 100 to 200 yards out and letting the car coast up to the light just before it turns green, then carrying on without ever letting the car come to a complete stop. These hypermilers, along with professional truck drivers, do this because they know that accelerating from a standstill burns the greatest amount of fuel, and because letting a car coast up to the light with the automatic transmission downshifting by itself is easier on the transmission than stomping on the brakes right beneath the stoplight. Oh, and it's easier on the brake pads as well.

Renault Koleos

By Ben Barry Motor Shows 28 September 2006 01:37 The lowdown Renault boss Carlos Ghosn today unveiled the latest fruits of the Renault/Nissan alliance at the Paris Motor Show: the Renault Koleos concept, the French firm’s first steps into soft-roader territory. Despite being a concept, the Koleos closely mirrors the production car. The Koleos is an incredibly important vehicle for Renault, taking it into the crossover 4x4 market, and being a key player in La Regie’s bid to release 26 cars by 2009 – ‘to rejuvenate, extend and revitalize our product range,’ according to Ghosn.

One Lap of the Web: Porsche 917, a karting brawl and the premiere of Drive

The Porsche 917, in Gulf livery, is one of most famous racers of all time. Only 65 were built between 1969 and 1973. Petrolicious is looking at #13, which was one of the first 25 examples built.