Lyric discussion by chrisb1 

Cover art for Cadillac Ranch lyrics by Bruce Springsteen

Bruce loves Cadillacs but realises their built-in obsolescence. He then draws the metaphor of an aging Cadilllac with his oncoming old-age. The "Cadillac Ranch" is a metaphor for an old folks home. It's also a real place in New Mexico - a work of art comprising old Cadillacs with their tails sticking out of the ground.

@chrisb1 Interesting idea but James Dean never lived long enough to go to an old folks home.