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

Porsche 998 (911) caught testing

The current version of the 911 has not long been refreshed, and still has more to deliver. Only the Carrera and Targa have had the facelift so far, and still to come is the Turbo, not to mention the GT3. But Porsche is already a long way down the road with the next generation 911 (998), which is not expected to launch until 2011, as you can see from this spy shot taken in rather chilly Arctic climes.

Some hybrids are not a green as they seem, interest group says

Car buyers who think they are helping the planet by choosing a hybrid vehicle to aid in cutting emissions don't always get the biggest bang for their buck, according to an environmental interest group. A report from the Union of Concerned Scientists shows that some hybrids come at a much higher price tag than their similarly equipped, conventional-powertrain counterparts, yet offer little in the way of environmental gain. These not-so-green hybrids compromise their value or eco-friendliness in a variety of ways.

Autoweek in review: This week's wrap-up

--MotoGP's Marco Simoncelli died on Sunday in a crash on the second lap of the Malaysian Motorcycle Grand Prix, when his helmet came off and he was hit by other riders. Officials canceled the race. -- The Mazda Takeri concept will replace the Mazda 6 sedan within the next couple of years.