Gas pump hoses

I remember when gas pumps had super long hoses that could reach across a car so it didn’t matter which side your tank was on. It just occurred to me why you don’t see them anymore. When they were longer there was a hose for each fuel type. Now there is a single hose for regular/medium/high grade. Now, not knowing the exact dimensions of the hoses but based on flow rates, I would posit that the average hose holds anywhere from 1/4 – 1/2 gallon, so the first bit of gas you get, is the same type as the last person pumped. This would definitely explain why the shortened the hoses.