Variants on the 'longest train' idea--

As stated previously:
The longest train I ever saw came down that Georgia Line;
The engine passed at six o'clock and the cab rolled by 'bout nine.

Or:
The longest train I ever saw was thirteen coaches long;
The only girl I ever loved was on that train and gone.

There's also a wreck variant somewhere; all I can remember is the second line of one verse:
His head was on the driving wheel, but his body was never found.

Perhaps some other ghoul will give us the rest of that.