Oddly Specific

Yesterday, as we were driving to Costco, Victor told me that in my car, the pedal on the left is the brake and the pedal on the right is the gas.

Me: That's right. How do you know that?

V: Because when my bus driver presses the pedal on the left, which is a rectangle, it is the brake. The pedal on the right is wavy and is the diesel.

That is, he calls it "the diesel" instead of "the gas" because it is important to him that a bus runs on diesel and not on gasoline.