Mentioned by Beadie above:

THANK GOD AND GREYHOUND
(Larry Kingston, Earl Nix)

I've made a small fortune, and you've squandered it all.
You've shamed me till I feel about one inch tall.
But I thought I loved you, and I hoped you would change,
So I gritted my teeth and didn't complain.

Now you've come to me with a simple goodbye.
You tell me you're leaving, but you won't tell me why.
We're here at the station and you're getting on.
And all I can think of is...
Thank God and Greyhound you're gone!

Thank God and Greyhound you're gone!
I didn't know how much longer I could go on,
Watching you take the respect out of me,
Watching you make a total wreck out of me.
That big diesel motor is a playing my song.
Thank God and Greyhound you're gone!

Thank God and Greyhound you're gone!
That load on my mind got lighter when you got on.
That shiny old bus is a beautiful sight,
With the black smoke rolling up around the tail lights.
It may sound kinda cruel, but I've been silent too long:
Thank God and Greyhound you're gone!

Thank God and Greyhound you're gone!

[Recorded by Roy Clark.]