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

Mercedes mbrace tech tracked Boston Marathon bombers

Carjacking a Mercedes-Benz M class proved to be a critical mistake for the alleged Boston Marathon bombers. When the driver escaped and called police, officers were able to track the vehicle using the crossover's factory-installed GPS system. Police decline to give details, but Mercedes-Benz USA confirmed it was contacted April 19 during the hunt for Tamerlan and Dzhokhar Tsarnaev.

Jay Leno gives us the lowdown on his McLaren P1 (video)

Jay Leno drives his new McLaren P1 Jay Leno has no shortage of cars to play with in his collection, but if this video of Jay and his new McLaren P1 is anything to go by, the P1 is his favourite car by far (at least for now). Jay meets up with McLaren CEO Mike Flewitt at his garage and there’s plenty of chat about what makes the P1 special, and how it compares to the legendary McLaren F1 (a car Jay also owns). Then it’s time for a drive out in the P1, first with Mike Flewitt as a passenger and then with Jay on his own as he takes the P1 round the winding roads near his home, and Jay reveals that he put nearly 900 miles on the clock in the first five days he had the P1.

General Motors to shut down Saab

General Motors has announced that it will be closing the Saab brand after the company was unable to strike a deal with Spyker Cars. This follows from last month's withdrawal of would-be suitor Koenigsegg, leaving Spyker the sole contender in the acquisition of the ailing Swedish brand. According to Nick Reilly, GM's European president, the company has decided to cut its losses: "Despite the best efforts of all involved, it has become very clear that the due diligence required to complete this complex transaction could not be executed in a reasonable time.