If you're not used to playing in Bb this one may take some getting used to. Most of the chords are open
position except for the Bb bar 1st fret. Thank goodness they danced around the Eb of the scale. :) Watch
the C chord. In the intro and verses it's a Csus2, barred at the 3rd fret, which is a bit darker than Cmaj.
The mood lightens a bit in chorus so the Cmaj works great there. Actually, the Cmaj works all the way thru
but the Csus2 feels better in the noted places.

The intro can be played with chords and still sound pretty full. But the lead part is quite simple.
It's a sliding barred double stop played on the G and D strings.

BEDIT: Once again, I blew it. Tabbing on acoustic is sometimes not fruitful for me. When I played along 
with the track on bass guitar, I found several errors in my tab

First of all, the song is in Fmaj not Eb. Similar scales except that the Fmaj contains E. Which is the second
chord in the chorus...not C. Actually, it's E5. I would have caught this if I had gotten the key correct the
first time.

Also, the Bb is not Bbmaj. It's Bbsus2. This ties back to what I thought were double stops in the intro. 
Actually the intro and song are played with sus2 bar chords. See corrected intro tab

Fsus2      X8101088
Dsus2      X57755
Csus2      X35533
Bbsus2     X13311
F          133211
G          320003
E5         022XXX      

Standard tuning, no capo.

Intro

Dsus2      Csus2 Bbsus2        Dsus2 Fsus2     Bbsus2
-3-5-5-5-5-5-3-3-3-3-1-1-1-1-1-1-1-1-5-5-5-5-8--8--8--8--1----
-3-5-5-5-5-5-3-3-3-3-1-1-1-1-1-1-1-1-5-5-5-5-8--8--8--8--1----
-5/7-7-7-7-7/5-5-5-5/3-3-3-3-3-3-3-3/7-7-7-7/10-10-10-10-3----
-5/7-7-7-7-7/5-5-5-5/3-3-3-3-3-3-3-3/7-7-7-7/10-10-10-10-3----
-3-5-5-5-5-5-3-3-3-3-1-1-1-1-1-1-1-1-5-5-5-5-8--8--8--8--1----
--------------------------------------------------------------

Verse

Dsus2                       Csus2           Bbsus2
Maybe I should take that picture off the dashboard
           Dsus2         Csus2              Bbsus2           
Before her memory hits the brakes and takes the wheel
Dsus2           Csus2           Bbsus2
I bet she's still crying on the front porch
           Dsus2         Csus2           Bsus2
Yeah, this time it's gonna take some time to heal

Chorus
          F        
Cause I'm on my way to Tennessee
         E5
Singing "Georgia On My Mind"
Dsus2
Chasing what they say' s a dream
         Bbsus2
Thinking maybe it ain't mine
           F
Cause that girl's in every song I sing
         E5
She's in every song I write
    Dsus2                      
And six string ridin' in the seat
      Bbsus2
Won't keep me warm tonight
G                   ABbsus2
God what am I suppose to do
G             Bbsus2         Dsus2 Csus2 Bbsus2 Dsus2 Fsus2 Bbsus2             
There more than miles in my rear view

Verse
          Dsus2         Csus2          Bbsus2   
Well, I'm headed north to what I swore I wanted
    Dsus2           Csus2       Bbsus2
And trying not to buy into my doubts
      Dsus2           Csus2           Bbsus2
But I just cant seem to keep myself from wondering
        Dsus2             Csus2           Bbsus2
Why I'm jealous of all them headlights headed south

Chorus
         F        
Cause I'm on my way to Tennessee
         E5
Singing "Georgia On My Mind"
Dsus2
Chasing what they say's a dream
         Bbsus2
Thinking maybe it ain't mine
           F
Cause that girl's in every song I sing
         E5
She's in every song I write
    Dsus2                      
And six string ridin' in the seat
      Bbsus2
Won't keep me warm tonight
G                   ABbsus2
God what am I suppose to do
G                     Bbsus2        Dsus2    
Theres still more than miles in my rear view

Lead (starts in the Dm above)
 
Dsus2  Csus2  Bbsus2                     Dsus2  Fsus2  Bbsus2
                         Yeah, more than miles

      G                                   Bbsus2
Yeah, I've been changing lanes without my mirrors
            G                       Bbsus2
Cause every time I look behind me I see her
        G                         Bbsus2     
I think I just realized how much I need her(damn)


Chorus

F
So I'm turning back to Georgia
         E5 
Stopping short of Tennessee
        Dsus2
I can't put my dreams before her
      Bbsus2
Man I need her here with me
           F
Cause that girl's in every song I sing
      E5
She's every song I write
         Dsus2
And that six string ridin' in the seat
   Bbsus2
Is sleeping fine tonight
G                         ABbsus2                      
Now I know what I'm suppose to do, yeah
       G               Bbsus2       Dsus2     Csus2  Bbsus2 
There's still more than miles in my rear view    Ohhhhhhh
           Dsus2   Fsus2     Bbsus2   
 More than miles, yeah
Dsus2 Csus2 Bbsus2     Dsus2  Fsus2  Bbsus2
Moooooooooore          More than miles