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

2010 BMW X6 M: Fast and fun--whatever the heck it is

Barreling around the racetrack, there's little lean entering the corners, plenty of thrust on exit and a monster amount of grip everywhere, and if it feels taxed at all, it's ever so briefly as the nose aims left and up from turn five for the steep climb out of the esses. Road Atlanta is plain ol' fast, and the BMW X6 M does well to keep pace, spilling gobs of power all over the track, blazing down the long back straight to nearly 140 mph, maneuvering like no two-and-half-ton pile of metal should. It's exhilarating stuff, to be sure, only we're left asking very many questions, and all of them are: Why?

Two thirds using mobile phones while driving

TWO THIRDS of drivers in the UK admit to using their mobile phone while driving despite it being illegal and dangerous. A study has found 60% of drivers make calls, send texts and even browse the internet on their phones when behind the wheel. Research by Flexed shows six out of 10 drivers say they answer the phone or reply to texts when driving.

New pictures: Audi A2 concept

Audi is set to give its A2 concept a public debut alongside its Urban concept at this year's Frankfurt motor show in the manufacturer's latest exploration of electric mobility. The A2 concept study revolves around the concept of space, with the vehicle having been developed with plenty of room for four people even with the car being 3800mm long, 1690mm wide and 1490mm high. The car is very much designed to impress aesthetically as well as improving the company's green credentials.