Something went wrong, please try again later. Invalid email Something went wrong, please try again later. Our free email updates are the best way to get headlines direct to your inbox Something went wrong, please try again later. Our free email updates are the best way to get headlines direct to your inbox We spend endless hours on the road, but do we truly know our cars inside out? Can you confidently say you understand the function of every button in your car? Drivers across the country have been left stunned by the discovery of a seemingly obscure button — a discovery that, in extreme situations, could actually save lives. Few of us consider the possibility, yet a certain TikTok user has shone light on an often-overlooked switch that might be a crucial escape mechanism if you find yourself stuck in your car. The user, going by @huyameishuoche, frequently shares videos about lesser-known car features and has certainly caught attention with their most recent revelation. Imagining oneself trapped in a vehicle isn't pleasant, however, preparedness is key. Imagine, for instance, you are in a collision where your car plummets into water; the doors are shut due to the water pressure around them, reports the Mirror. What would you do? The TikToker describes a way out of such a nightmare as "very simple". She suggests folding the back seats down and making your way into the boot. In the boot lies a "life-saving switch" which, once activated, opens up the boot with just one push, providing an instant escape path out of the submerged car. Owing to her knowledge in automotive tips, this video has quickly amassed over 23,000 views, imparting essential car knowledge to drivers nationwide. The mystery behind the tiny black dots on car windscreens has been unravelled, and it turns out they're not just for show but fulfil an essential purpose. (Image: TikTok/@huyameishuoche) These specks, referred to as "frits" or dot matrices, are commonly situated along the windscreen's edges, often next to a solid black band that frames the glass. Experts at Autoglaze have shed light on the fact that these dots are frequently overlooked by drivers, yet they play a crucial role in "distributing temperature evenly to lessen optical distortion or lensing." They further explained: "This happens when the frit band (the solid black one) heats up much faster than the windscreen's glass, creating an optical distortion that makes either straight lines look curved or bowed inwards toward the centre." Therefore, the dots act as a heat dissipator, spreading the warmth uniformly across the windscreen to ensure the driver's vision remains clear.