Lyric discussion by Iemanja75 

Lots of info on the real meaning of this song here, as well as some history:

"Before recording Full Moon Fever, an arsonist burned down Petty's house while he was in it. He escaped and spent much of the next few months driving between hotel rooms and a rented house. It was on these drives that he came up with many of the songs for the album, and the fire was a huge influence. Petty felt grateful to be alive, and the whole incident had a calming effect on him."

also

"George W. Bush used this in his 2000 Presidential campaign. When Petty found out, he threatened to sue, as he did not support Bush. Bush stopped using the song but won the election anyway. Petty's home state of Florida decided the election when Bush won the state by a very slim margin."

songfacts.com/detail.php

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