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First look: 2014 BMW M3 and M4

The BMW M3 is back, faster and more powerful than ever before -- but only as a four-door sedan. For its iconic 3-series-based performance model, BMW will dispense with a 26-year tradition of high-revving naturally aspirated engines in lieu of turbocharged six-cylinder power. Revealed here in production-car guise for the first time, the new 425-hp M3 sedan will be joined at the outset by its sister model, the M4 -- a mechanically identical but stylistically sleeker two-door coupe previewed in lightly veiled concept-car form at the Pebble Beach concours in California last August.

One Lap of the Web: Humvees, abandoned Ferraris and a Volvo collection

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- Auto Blog drives a military Humvee that's fully armored for duty in combat zones, weighing in at 14,400 pounds.

Mercedes-Benz Business-Limousine by BINZ offers stealth and value

While the Mercedes-Benz S-class XL, the Maybach 62 replacement rumored to use the name Pullman, is still a few months and a couple hundred thousand dollars away, there are other options out there for getting work done on the road to the office. While Brabus wowed crowds at the Frankfurt motor show just a couple months ago with its mental Biturbo iBusiness sedan based on the newest S-class, at the end of the day we weren't sure if that was a car for the rear-seat passenger or the driver. German coachbuilder BINZ GmbH has made a name for itself over the last few decades building Mercedes-Benz-based ambulances and unbelievably cool security cars based on the G-class, and the company also happens to offer a number of options when it comes to limousines.