Lyric discussion by muldrake 

You've all missed the central point of awesomeness of this song. It's pretty subtle. Who the fuck is the only person who could be singing this song?

This song is sung from the POV of the guy who murdered the passengers. The driver is singing this song. He killed them all, took their money, and is now moving on to other things, and inviting you to be his next victim.

I bet BOC is pretty disappointed how few people got this song.

Yup - you got it

"The driver is singing this song."

Absolutely! Makes perfect sense. It must be the driver. That's why he sings:

The driver said, "The border's just over the bluff"

Who else could it be but the driver? Yep, BOC is pretty disappointed.

The driver is not telling the story. The 5th line says 'Three good buddies of mine...' Also, the driver was not the killer, 'And the other guy turned and spilled, Three boys blood...'

Must be has Buck said (cuz he wrote it?). One of the 3 buddies survived.

An error occured.