Why? Part II

Why do you need a driver's license to buy liquor when you can't drink and drive? Why isn't phonetic spelled the way it sounds? Why are there interstate highways in Hawaii? Why are there flotation devices under plane seats instead of parachutes? Why are cigarettes sold in gas stations when smoking is prohibited there? Do you need a silencer if you are going to shoot a mime? Have you ever imagined a world with no hypothetical situations? How does the guy who drives the snowplow get to work in the mornings? If 7-11 is open 24 hours a day, 365 days a year, why are there locks on the doors? If a cow laughed, would milk come out her nose?