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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.

2021 Ram TRX, BMW 5 Series and the end of the Alfa Romeo 4C | Autoblog Podcast #657

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Consumer Editor Jeremy Korzeniewski. They kick things off discussing the brand-new 2021 Ram 1500 TRX, discussing how it compares with its main rival, the Ford F-150 Raptor. They move on to the latest BMW 5 Series before a quick overview of the Buick Enclave. The podcast wraps up by saying goodbye to the Alfa Romeo 4C, which leaves the world after the 2020 model year. Autoblog Podcast #657 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown What we're driving2021 Ram 1500 TRX 2021 BMW 540i 2020 Buick Enclave Other news Goodbye, Alfa Romeo 4C Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:

Latest Forza Horizon 3 car pack features a Skyline and a fast Swedish wagon

The steady stream of Forza Horizon 3 car packs shows no signs of slowing down, and the latest Rockstar Energy Drink pack includes enthusiast favorites such as the R31 Skyline and the Volvo V60 Polestar. The car pack also features a couple of sporty two-doors and some off-road oriented machines. Luxury-minded players will be pleased to see both the Bentley Bentayga and BMW i8 make an appearance. People more concerned with ultimate performance will have a different pair to consider. Players will want to check out the Ford trophy truck for busting dunes, and the Radical RXC Turbo for race-car levels of pavement performance. Finally, yet another classic Aussie muscle car appears in the pack: the 1972 Ford Falcon XA GT-HO. For those interested in the new rides, this car pack is included in the Forza Horizon 3 Car Pass, or can be purchased on its own. If only one or two vehicles are must-haves, it's also possible to purchase the cars individually. Related Video: Related Gallery Forza Horizon 3 Rockstar Energy Car Pack Image Credit: Turn10 Studios / Playground Games Toys/Games Bentley BMW Ford Volvo Videos bentley bentayga nissan skyline volvo v60 polestar forza horizon 3