I am learning this song by request.  It is pretty repetetive.
Just listen to the recording for timing.

Life Is A Highway
Words and music by Tom Petty

Standard Tuning
PM      palm muting

Intro/Chorus (w/ distortion, x2 as each)
e--------------------------------------------------------
B--------------------------------------------------------
G--------------------------------------------------------
D-7--5--3--3-----3--2-----------3--2--5--5---3--2--5--5--
A-5--3--1--1-----1--0--3--3-----1--0--3--3---1--0--3--3--
E----------------------1--1------------------------------

Verse (w/ distortion) Play this twice     And this once (Pre-chorus)
e----------------------------------------------------------
B----------------------------------------------------------
G----------------------------------------------------------
D------------------------------------7----5----3-----------
A-3-3-3-3-3-3-3-3--------------------5----3----1----5------
E-----------------1-1-1-1-1-1-1-1-------------------3------
  PM....................................................

Chorus

Verse

Pre-chorus

Chorus

Bridge (w/ distortion, x2)
e----------------------
B----------------------
G----------------------
D------3----7----5-----
A-5----1----5----3-----
E-3--------------------
  PM...............

Play the chorus twice after this, methinks

Pre-chorus

There's a brief rest after the pre-chorus.  Then continue playing the chorus an
additional three or four times

Done.

Song Structure:
Intro
Verse
Pre-chorus
Chorus
Verse
Pre-chorus
Chorus
Bridge
Interlude
Prechorus
Chorus

Peace.