Carbon Tax On Gas.!

Why are people going crazy at gas stations for a $0.03 cent increase per litre on gas? Yes, carbon tax increase is not what people want, but why do we create chaos as gas stations for this? You are literally paying 3 cent more per litre. That is $1.5 more for 50 litre of gas. How much gas are you burning while waiting to save that 3 cents a litre?

Please tell me if I am wrong or missing something in this whole carbon tax calculation scenario.