>>>There is a time-only sign near me here in Florida...about 50 miles west, as you prepare to cross the Appalachacola, there is a sign "Entering Central Time Zone"
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>>And another one like that on I-75 in Tennessee, then another back to Eastern. Along the same lines, in driving from here to Chicago you pass through: Georgia, Tennessee, Georgia, Tennessee, Kentucky, Indiana, before Illinois. Coming back is just the reverse, of course. And no, I didn't repeat myself in the above.
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>I know you didn't (haha) .. I drive I-75 quite frequently. The road that I was referring to was I-10 in No. Florida. We must live pretty close to each other in the scheme of things.

Well, in Tennessee it's because you're driving around a mountain. In Flordia, it's probably a swamp :-) (no offense meant). And I'm probably familar with the parts of I-75 down in your neck of the woods. I-75 to the turnpike to I-4 for Orlando.