I’m 13 and even I know oil is finite

I am a 13-year-old student.

After school recently, I was waiting for my bus, watching the multitude of cars that surrounded me, the vast majority of which ran on petrol or diesel, when another bus stopped.

I was standing by the rear of the double-decker bus. Suddenly, the bus’s large diesel engine emitted foul-smelling fumes, which overwhelmed my senses and forced me to cough.