Capo 1
     C
My Mama mapped out       F
the road that she       C
knows Which 

hands you shake and 
G
which hands you hold 
In my 
C
hand-me-down Mercury, 
F               C
ready to roll She                    G
knew that I had to go And 
C     F    C    
hangout, make lots of 
G            C   F   noise and lay out 
C
late with 
  G    Am
a boy Make the 
mistakes 
         C
that she made 'cause              F   G
she knew all along  I 
            C  F
was already gone I 

was already 
C  G               gone I was already 
Am   C
gone Life is a 
        F
runaway train you 
                                        G
can't wait to jump on 

C,F,C,G 

You basically do the same thing on the rest of the verses and choruses Im not sure 
how accurate it is and the lineup isn't right but its somethin