[aembleton]

Tangent off your tangent: Do you have one hose at each pump at your gas station and you just select which grade of fuel you want? I've never seen that before. In the UK they have multiple hoses, and you choose which one by picking up the right hose.

[pertique]

Not the commenter you asked, but in the United States pumps with one hose are common. All the grades of petrol are dispensed through the same hose, and you just select which one you want.

Some pumps do have two (or more) hoses, especially those that have multiple types of fuel (one for regular petrol, and one for diesel). Some pumps for also have separate hoses for each grade, although they seem less common to me.