2000 Bmw Z3 Roadster Convertible 2-door 2.3l on 2040-cars

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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.

2013 BMW 135is Coupe

BMW's Best 1 Series Gives Back What You Put In
Every once in a while, I find myself, despite my solitary leanings and inherent modesty, working out in some kind of class setting. The tone and tenor of these classes ranges wildly - from the quiet, follow-the-leader variety, to those with a kind of Cult of Personality man or woman calling the shots, usually with idiom-laden shouting and theatrical hair. Despite their personal variation and range of professional effectiveness, there's one common concept that most instructors bring up at some point: working with intention.
The idea, as it relates to physical fitness, is that focusing your brain on the movement at hand ­- the rate of your own breathing, or the muscle groups being worked for instance - helps to perform the act efficiently and correctly. Having spent a happy majority of the last decade in an exercise-free near-debauch, I was a bit surprised to find out that this kind of mental game really works pretty well.

This insane Barris-like custom car is a backyard BMW Z3 build

This is the second car made by Englishman Paul Bacon and it's called the Cosmotron, fashioned over 18 months in his backyard shed. Underneath that Jetsons bubble canopy and swinging-sixties body are the bones of a 1998 BMW Z3 with a 2.8-liter inline-six. Bacon stripped the roadster down, then built it back up using fiberglass laid over polystyrene foam, and leather hand-stitched by his wife. Bacon said he remembers how we were told that 21st-century cars would look like the Cosmotron, and since they don't, he had to fix the error. The list of 20th-century add-ons, however, is impressive, like the six SU carburetors topped off with department-store salt and pepper shakers, and the rear grille decorated with shiny plastic tops from moisturizer bottles. After driving the Cosmotron for two years, Bacon sold it to get ready for his third project. You can hear Bacon and the new buyer tell their stories in the video above.