Do not hurt yourself thinking

Take a moment and think about it, but not to long.

Why are there interstate highways in Hawaii?
Why are there flotation devices under plane seats instead of parachutes?
Why do fat chance and slim chance mean the same thing?
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?
Why do we park on driveways and drive on parkways?
Why do we send cargo by ship, and shipments by car?
When you choke a smurf, what color does it turn?
Why do they put braille on the number pads of drive-through bank machines?