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BMW reveals M4 safety car with innovating water injection system [w/video]

Racing series don't just pick their safety cars at random, or use just whatever car is lying around. These days the car that sets the pace at the front of the pack is typically provided through consideration by a sponsor. In the MotoGP series, that's BMW and its M division, which have served up the Official Car of MotoGP since 1999. What you're looking at is the latest, and it packs some innovative technology on board. Aside from the matte black wrap with BMW's iconic striped livery, upgraded aero kit, retrofitted interior and emergency equipment, this BMW M4 coupe packs a new injection system under the hood. Only instead of injecting fuel, it injects water into the combustion chamber – something that wouldn't usually be recommended, but BMW insists actually aids in the combustion process. The idea is that the temperature of the air being mixed with the fuel inside the engine is usually hotter than ideal, so the system injects a fine mist of water into the collector in order to reduce the air's temperature... sort of like one of those hydrating misters at an amusement park or outdoor mall, but in an even hotter environment. The system brings the temperature of the air down to a more optimal temperature, helping it combust better. The process is said to yield a number of positive effects. For one, it reduces knocking. For another, it can make more out of lower-octane fuel where higher octane isn't available. It also can control the adverse effects of higher ambient temperature on the combustion process. But most of all, it increases output and reduce fuel consumption by around eight percent. Whether that eight percent is worth the added weight of the system – particularly with water pump and a 1.3-gallon tank in the trunk – is up for debate. But we'd imagine that the Bavarian engineers have weighed very carefully. Of course there's also the matter of refilling the water tank, which BMW says would be carried out whenever the safety car is refueled, but in real-world conditions would only necessitate attention once every five top-ups at the gas station. By now you might have guessed that BMW probably didn't develop this system just for the MotoGP safety car, and isn't planning on keeping it confined to the racetrack. Instead it's being tested and demonstrated on the safety car before being rolled out on production models in the future.

2014 BMW 328d xDrive Sport Wagon

There's a running joke among auto writers that the perfect car would be a diesel-powered, rear-drive wagon with manual transmission and no power accessories whatsoever. It would only be available in brown and would somehow be as fun to drive as a Mazda MX-5 Miata. Makes total sense, right?
Realistically, no manufacturer is ever going to completely fulfill our wishes, no matter how much we beg, plead, kick and scream about our dream car that most of us would actually never buy. The best we can do is hope for a vehicle that mixes some aspects of this ideal journalist's car. And in today's world, that vehicle just might be the BMW 328d xDrive Sport Wagon.
No, it's not available with a manual gearbox, and power can only be sent through an xDrive all-wheel-drive system. It's also not available in brown (although both Mojave Metallic and Sparkling Bronze Metallic are acceptable stand-ins), but it ticks the two main boxes of being a diesel-powered wagon, one of only a couple such models in the United States.

Drifting can be dangerous for spectators, too

Okay kids, here's your lesson for the day. When you go to a motorsports event (that isn't a rally), there are these things called walls. They're big and hard. There might be stacks of tires in front of them. There are also these things called barriers, catch fences and run-off areas. They exist to protect you, the spectator, when something inevitably goes wrong on the track.
If you don't have these things, you probably shouldn't be watching whatever four-wheeled mayhem is taking place. This gentleman learned that the hard way, after getting a bit too close while some hoon drifts his BMW 3 Series.
Scroll down for the video, and be warned, while there isn't any blood that we can see, some viewers might find the sight of a human getting punted by a BMW disturbing.