Answer: No, you aren't technically going into the future.
Reasoning: For the sake of argument, let's just put it as the world was created (or finished forming itself) at an exact moment in time. At any given moment, X seconds have passed since that moment in time.
Changing location on the planet doesn't do anything to the value of X. Just what that area has as it's current time.
And I'm all for making the world one timezone if it wasn't that I hate night driving, and depending where you are in the world you'd be stuck with night driving every day (oxymoron >_<), sleeping when the sun is out...
Plus I function better when there's sunlight to work with, and I sleep better with the lights out XD
Oh, and I got like 3 hours and change left

Already into a bottle of fake-wine though (sparkling grape juice ^_^)