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?

Here's your chance to save a few lives

It's time to rally the troops, folks. And if you need any impetus, think about this: We're coming up on prom season, when stupid is as stupid does far too often, especially behind the wheel. We refer to teenage driving instruction.

Chevrolet to build 100 millionth Small Block engine

The 100 millionth copy of the Chevrolet Small Block engine will roll off the production line before the end of the year--a major milestone for the brand. The Chevy Small Block V8 was first introduced in 1955, laying the foundation for decades of vehicle performance and sustaining a competitive name for Chevy in the market. "The introduction of the Small Block changed everything," General Motors vice president Jim Campbell said.