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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 X5

Is Better Than Ever Still Good Enough?
By now, all but the staunchest of traditionalists have moved past the shock and horror of seeing their favorite automotive brands branching into categories and segments that break with their previously accepted norms. In other words, you and I don't really care all that much if the BMW M3 is powered by an inline six or a V8, or whether it boasts a turbocharger, just so long as the end result is an awesome car. Similarly, we don't get all hot under the collar seeing that same M3 share space on the showroom floor with a brace of SUVs and crossovers... or, as BMW continues to insist, Sports Activity Vehicles.
Time, as they say, heals all wounds, and the BMW X5 has been around long enough, having first seen the light of day in 1999, that anyone offended by its existence has since gotten over it. Plus, the X5 is a legitimately nice vehicle to drive, offering such desirable qualities to family men and women as seating for up to seven, all-wheel drive and a commandingly tall view of the road. For the enthusiast set, the X5 serves up a taut chassis and powerful engine options.

BMW dismisses Tesla tie-up talk

Despite recent rumors to the contrary, don't expect to see much collaboration between Tesla and BMW in the near future. Based on some rather prickly statements from the German automaker, Elon Musk might have even burnt some bridges in Bavaria with his latest proclamations. The spat stems from Musk's recent interview with German magazine Der Spiegel where he discusses future collaboration with BMW on "battery technology or charging stations" and the possibility of a battery factory in Germany. But apparently, any future tie-ups are news to the Bavarian automaker. In an interview with the German business publication Wirtschafts Woche, an unnamed spokesperson for the company claims Musk said it all for PR value and swats down most of the statements. BMW has no intention of acquiring Tesla shares, and they aren't working together on any tech. There's not much chance for future cooperation on a battery factory in Germany, either. BMW believes that the cells can just as easily be purchased from suppliers, like other auto parts. The one slight concession is that the spokesperson said that the German automaker would be willing to supply Tesla with carbon fiber. That's not an exclusive offer, though, and the company is open to negotiate such a deal with any interested automaker.