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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.

Rolls-Royce Cullinan and BMW 8 Series spied south of Death Valley

Recently, we've stumbled upon a number of manufacturer prototypes running around. Usually, spy photographers sit and wait for hours with cameras primed in order to get a few shots of a car. We just got lucky. First, we caught the new Chevy Corvette ZR1 convertible during a Facebook Live video. A week or so later McGraw snapped a video of a ZR1 coupe cruising in his neck of the woods. Today, our ace photographer Drew Phillips caught a BMW test fleet filling up the new Rolls-Royce Cullinan and 8 Series coupe in Baker, Calif. Baker sits along Interstate 15, about halfway between Los Angeles and Las Vegas. It's just south of Death Valley, and, being late August, suggests that BMW was doing some hot weather testing. Drew was filling up his car when the fleet rolled in. There were at least two of the new king Rolls and a single 8 Series. Both cars were wearing a full swirl camouflage wrap. It's not an uncommon place to see prototypes. Still, seeing a whole fleet roll in is quite a sight. We've seen official photos of the Cullinan before, but these pictures give us our best view of the profile and rear we've had so far. From a distance, it looks like a high-riding version of the new Phantom with a hatch in place of the trunk. The taillights are obviously just filler units. Expect the final version to look very much like the squared off LED units on the Phantom. Likewise the interior and engine should be straight from the Phantom. That means a twin-turbocharged V12, though power is likely to be sent to all four wheels. We've seen the full BMW 8 Series concept a few times now. The proportions on the production car look the same, with a long hood and even longer wheelbase. The nose isn't quite as aggressive as the concept, but we expected the styling to be toned down to meet crash and safety standards. As for engines, look for six, eight and (hopefully) 12-cylinder power under the hood. A plug-in variant is also expected. Both cars have been in development for a long while, so look for full debuts sometime this auto show season. Maybe we'll happen upon some more test mules between now and then. Related Video:

BMW X4 Concept images leak ahead of Shanghai debut

Last month, BMW confirmed that its long-awaited X4 crossover would debut next year, but other than imagining a smaller X6-shaped crossover, we really had no idea what the new niche model would look like. That is until a Russian website, Autowp, leaked a handful of embargoed images this morning showing the X4 Concept that will be unveiled in a couple of weeks at the Shanghai Motor Show.
From what we can see of this concept's styling, there are more elements shared with current BMW models than not. The face of the concept is an attractive blend of the current 3 Series sedan and the X3, while the roofline has definitely plucked right from the X6. This thinly veiled concept should carry over almost untouched when it enters production with the exception of the door handles and the overly stylized fascias and side mirrors. According to CarScoops, it will measure the same length as the current X3 and use the same engine lineup as well. Stay tuned, as we'll have more information on this concept shortly.