This is something that you glance at every day but probably haven't noticed. When someone first pointed this out to us we were surprised because we hadn't noticed the little triangle within the fuel gauge. Had you before reading this? This triangle is actually trying to tell you something. Don't worry, you haven't missed anything major all these years - the triangle just points you to the side of the car which has the fuel refiller cap. That means you can drive into a petrol station now in a car you're not familiar with and at a glance know which side of the car to aim at the petrol pumps. Be careful to avoid hitting them though.
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