Here's a better question yet: Why are the gas cans more expensive than the kerosene and diesel cans, which hold the same amount and are the exact same shape. The only difference are the colors. Red for gas, blue for kerosene and yellow for diesel.
I wanted a gas can to carry extra fuel to the track so I bought a kerosene can, which was half the price of the gas.
Anyhow, when I pour gas into my car, I remove the spout and pour it into a 2ft. flex funnel.....much quicker!