Goldwing06, I usually don't drive the car, I drive the truck. Hence the forgetting where the gas cap is and not so much forgetting as it is conditioning. When you pull into a gas station your brain is some what on auto pilot. Your not thinking what vehicle your driving and where's the gas cap, your thinking what pump is open, which line is shorter, why is that person in line backwards. I happen to be a very defensive and safe driver. As for the little diamond, I didn't need to know it was there. I most Likely read about it in the owners manual when I purchased my truck but as it's not an important aspect of safe driving, like some of the other gages and lights in the dash, I didn't give it a second thought. Many of us suffer from CRS ( can't remember shit ) but its usually because it's something that's not that important to us in day to day living, like the little diamond on our gas gage.