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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.

BMW Z5 roadster gets frosty in winter testing

The successor to the BMW Z4 (remember that thing?) is currently undergoing testing in what may be the least hospitable place for a two-seat roadster – northern Sweden. Yep, even sunshine-loving convertibles need to undergo winter testing. We still aren't 100-percent certain of the name, but rumors are pointing to BMW ditching the Z4 nomenclature in favor of Z5. As we've reported before, it's very likely that this car is being developed with help from Toyota. The platform underpinning the car shown here could become the long-awaited new Supra (albeit in hardtop-only form). We'd love to tell you about the look of this new car, but between the camouflage and the caked-on snow, it's hard to draw a bead. We can clearly see the headlights are inspired by newer BMWs like the 7 Series and 2 Series, but other details are harder to discern. The right elements are here, though. The prototype has a long hood and short rear deck. It's also worth pointing out that the car shown here marks a return to a canvas convertible roof. Aside from being less complex, our spies report that the soft top is being used to lower weight and provide sharper handling. While our report on the Z4's successor from March 2015 pointed to a 2020 launch date for the new roadster, our spies say the German part of this BMW/Toyota partnership could launch in late 2017 or early 2018 with four- and six-cylinder engine options. Related Video: Featured Gallery BMW Z5: Spy Shots Image Credit: CarPix Spy Photos BMW Toyota Convertible Performance bmw z5

The troubled Alfa Romeo Giulia needs serious help [UPDATE]

UPDATE: An Alfa Romeo US spokesman responded to this article with the following statement: The safety concerns expressed in the story are false. The all-new 2017 Alfa Romeo Giulia is designed and engineered to meet or exceed all federal safety regulations. The Alfa Romeo Giulia will begin production for the North American market in the late second-quarter of this year. Alfa Romeo will have a full product portfolio of premium vehicles that includes plans for (8) all-new Alfa Romeo vehicles by 2020. The product launches are prioritized by segment volumes starting this year with the Alfa Romeo Giulia production for North America starting in late Q2, followed by the Midsize-UV – the 2nd largest premium segment in North America. Even on the day you dragged them kicking and screaming and gesticulating wildly to a table full of concrete evidence, Alfa Romeo executives will never admit the Giulia program is going through a tough patch. But it is. Reports say the Giulia, on the eve of production, didn't just fail one internal crash test, but failed the front, side and rear impact tests. Alfa denies it. Automotive News published a report last week saying two suppliers had insisted the Giulia, on the eve of production, didn't just fail one internal crash test, but failed the front-, side-, and rear-impact tests. A third supplier source told us the same thing. Alfa is denying it. It was due on sale in Europe late last year and was supposed to be here in the next month or two. But it wasn't, and it won't. It was to be headlined by a twin-turbo V6 that reportedly howled its way around the Nurburgring 14 seconds faster than the BMW M3 could manage. That second part is only true if you believe it's fair to compare a full lap in a standard BMW M3 with a favorable accumulation of sector times to a development prototype Giulia with 220 pounds stripped out of it and rolling on hand-cut racing slicks. No, me neither. A Promising Start The Giulia's all-new architecture was developed in just two years by a skunkworks of young engineers headed by Fiat's engineering prince, Philippe Krief, and (bafflingly) sited inside Maserati's headquarters complex in Modena, about three hours from Alfa Romeo's own Turin HQ.