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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.

Tesla in talks with BMW about batteries, charging collaborations

With Toyota and Daimler no longer holding Tesla shares, the electric vehicle company might be looking for a new partner – possibly a Bavarian one. In a new interview with Germany's Der Spiegel, CEO Elon Musk confirmed that he has had talks with BMW execs about future collaboration. "We are talking about whether we can collaborate in battery technology or charging stations," Musk said in the interview, according to Reuters. However, a Tesla spokesperson has tempered things by saying no formal agreements are in place at the moment. In the same interview, Musk reportedly praised BMW's use of carbon-fiber-reinforced plastic in its i sub-brand offerings, and said he would like to have a battery factory in Germany in the next five or six years. The possibility of technological cooperation between Tesla and BMW has been a hot topic this year. In June, Musk reportedly met with BMW execs, and the two companies were also rumored to have met with Nissan to discuss charging technology. When Daimler sold off its shares, there was talk of it opening the way for possible collaboration between the two automakers, as well.

6 luxury car brands to watch in 2024

2023 was a healthy year for the auto industry, and even with incentives returning and dealer lots filling up, there's plenty to like about the market if you build luxury automobiles, and we expect 2024 to be more of the same, which makes luxury-segment rivalries all the more interesting. Top luxury car brand rivalries? Well, that sounds downright uncivilized. But we know better, don't we? And when every quarterly sales update is an opportunity to remind somebody else that they bought the wrong status symbol, well, who can resist? Certainly not the diehard customers who fly their favorite brands' banners high.  Read more: Auto sales: Industry records best year since 2019 Read more: 2023 auto sales and 2024 preview: Ford Bronco vs. Jeep Wrangler This is a tricky segment to define, but essentially, we're looking at luxury car brands with depth to their portfolios and dealerships that exist to attract real-world customers. The Bentleys, Rolls-Royces and McLarens of the world are luxury cars, certainly, but we're more concerned with brands that have a bit more mass appeal — manufacturers who treat supply constraints as fiascos rather than features. If you disagree with our selections, feel free to let us know in the comments.  And since we're mostly concerned with finishing order, the luxury brands and totals featured here may change as new data come in throughout 2024. Due to the wild swings of the past several years, we're treating 2023 as the baseline by which we'll measure sales performance. And rather than rank brands vs. their finishing order in 2022, when supply-chain and inflationary issues still played havoc with sales figures, we're starting 2024 off with a clean slate.  The mainstream luxury segment is always a dogfight, but with their varied approaches to electrification all of the major luxury brands are in the midst of reshaping the premium landscape. Who is doing it right? Well, according to U.S. shoppers, the usual suspects are up to their old tricks.