This is John Mayer's cover of Route 66 from the movie Disney/Pixar movie "Cars". Its all 
twelve bar blues in the key of G. Have fun with this tab.

There are pretty much just these three chords: G7, C9, and D9.
Here is the "jazz form" of these three chords that sound the best with this song.
    G7         C9        D9
e|--x----------3----------5---------|
B|--3----------3----------5---------|
G|--4----------3----------5---------|
D|--3----------2----------4---------|
A|--x----------3----------5---------|
E|--3----------x----------x---------|

The rhythm is more of a faster jazz rock in the beginning and goes to a slower bluesy 
rhythm.


Verse:

  G7
If you ever plan to motor west
       C9                                   G7
Travel my way, take the highway that's the best
        D9        C9     G7
Get your kicks on Route 66

G7            C9            G7
It winds from Chicago to L.A.
          C9                 G7
More than 2000 miles all the way
         D9       C9     G7
Get your kicks on Route 66


        G7   ................
Now you go through St. Louie
C9 .............
Joplin, Missouri
G7
Oklahoma City looks mighty pretty
       C9
You'll see Amarillo
G7
Gallop, New Mexico
D9                  C9
Flagstaff, Arizona (Don't forget Winona)
G7                D9
Kingman, Barstow, San Bernadino


      G7      C9                 G9
Won't you get hip to this timely tip
         C9                   G7
When you take that California trip
         D9       C9     G7
Get your kicks on Route 66
         D9       C9     G7
Get your kicks on Route 66.


      [Solo in G pentatonic blues scale]


     Okay, so the pattern isn't to complicated. Its just keeps on like this till the end 
the song. In the ending blues solos it just changes rhythm type and tempo but all the 
are the same.

 Have fun and here's the rest of the lyrics


Now you go through St. Louie
Joplin, Missouri
Oklahoma City looks mighty pretty
You'll see Amarillo
Gallop, New Mexico
Flagstaff, Arizona, Don't forget Winona
Kingman, Barstow, San Bernadino


Won't you get hip to this timely tip
When you take that California tri
Get your kicks on Route 66
Get your kicks on Route 66.
Get your kicks on Route 66.
Get your kicks on Route 66.