I think you got the group right, but "route 66" is the song title...their version

https://www.youtube.com/watch?v=ih7kl0sjdSM

Mark Chesnutt, Texas is a bigger than it Used to be?

Not even close. Nothing in the song related to that verse/chorus. too slow, no james burton style licks...
This has been bugging me for a while. Just can't seem to pull it out of my brain.

Poco Coast is Clear?

If it has California anywhere in the song, look here:

Songs About California

Do you remember any of the melody? PPOT Brethren zeroed in on Midnight Cowboy pretty quick when I posted up an online midi sample I had put together. Check out http://onlinesequencer.net/

Crikey, it went to the 2nd page. Where's the love? Slight mod to the chorus in my 1st post. In the shower this am, I remembered "coast to coast, TIMES SQUARE to LA, coast to coast, 3000 miles all the way". Nothing comes up in the online lyric finders. Fast with country picking, close to "one way rider" style, just a tad slower. (youtube "one way rider"). It's probably 25 to 30 years old, so some of you youngsters probably never heard it.

Are you sure you got the lyric correct?

http://www.lyricfinder.org/

I searched there previously, as well as some other ones. Pretty sure I'm pretty close on the lyrics.