That’s another **clickbait-style hook**, not a real claim by itself. > “I didn’t even know this was a thing, but every driver should know about it” This kind of line is used to: * create curiosity * suggest a “hidden secret” * push people to click “see more” without giving details ### What it usually turns out to be In car-related posts, this phrase is commonly attached to very ordinary things like: * How to use a **parking brake properly** * Tire pressure warnings or dashboard lights * How to check oil or coolant * Emergency kit basics * Fuel-saving driving habits * Using recirculation/AC settings correctly Sometimes it’s useful advice—but often it’s just basic driving knowledge presented as “secret information.” ### Reality check There is no single unknown “thing every driver must know.” Safe driving knowledge is well documented and widely taught; viral posts just repackage it to sound hidden or dramatic. If you paste the full post or describe the “thing,” I can tell you whether it’s actually useful, outdated, or misleading.