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Here’s how Elon Musk might use rocket thrusters on the new Tesla Roadster

Last week, SpaceX and Tesla CEO Elon Musk announced bold plans to combine the technologies of his two biggest companies by placing rocket thrusters on future specialized models of Tesla’s Roadster. The thrusters won’t actually combust, according to Musk; instead, they will expel highly pressurized cold air, giving the Tesla an extra boost in acceleration. It’s a move the might technically work, but it also baffles industry experts and engineers: the thrusters won’t be very efficient and probably won’t be street legal. Specifically, Musk is talking about incorporating a key piece of hardware from SpaceX’s Falcon 9 rocket — a tank known as a composite overwrapped pressure vessel, or a COPV. These bottles are made out of a thin metal liner that’s wrapped in carbon fibers, and they’re a great way to store a lot of pressurized air in a very small space. They’re also fairly lightweight, which is why many rocket manufacturers like using them to help pressurize their rockets. “IS...

Sources claim Xiaomi won't unveil the Mi 7 at MWC 2018

As we inch towards MWC 2018, tensions within the industry are mounting, as per usual. With rumors flying left and right, it's incredibly hard to paint a good picture of company inner-working and relations, especially around this time of year. However, there has been an undeniable serge in scheduling and timing reports and issues as of late and Xiaomi is now part of that list as well. Unlike  last year , Xiaomi will definitely be present at the Barcelona venue this time around. However, a high-ranking company employee has allegedly stated in anonymity that there will be no major announcements involved. That means no Mi 7 or Mi Max 3, for example. However, another fresh insider tip, one based on supplier chain info, claims that the company is preparing to unwrap an updated Mi Mix 2S model, potentially prior to MWC. Other sources say that the new proprietary  Surge S2 chipset  will be featured at the show. It is pretty clear that Xiaomi is cooki...

Instagram now tells everyone when you’re active, here’s how to hide it

Another day, another feature nobody asked for. Facebook subsidiary Instagram has now enabled activity status in direct messages: this means that practically all of your friends will now be able to see w hen the last time you were actively using the app was. The feature rolled out as part of the latest updates for  Android  and  iOS  – so at least you know everyone is getting the same deal. In case you were wondering how this looks, Instagram now displays a line indicating the last time a user was active on its platform directly underneath their username. The activity status is currently only visible in direct messages. While some might find this change slightly annoying at first, it is not all that surprizing to see it in the main app. Indeed, Facebook integrated the same feature in its Messenger app ages ago. The good thing about the new addition is that Instagram has given users the option to opt-out from having their activity status visible to everyone. Here’s how...