A Relationship with Cars

I am the polishing of a car roof reflecting a pink sunst,
I am the backseat with a beaten brown suitcase and an old miscellaneous map,
I am the fear of accompanied car journeys and the chances of lone taxi rides,
I am the possibility of four wheels and a body in transit,
I am the result of a multitude of destinations and a final ending,
I am a one way ticket with no fee required.