Why Was He At The Bus Station At The End Of The Movie When He Had A Car?

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I just finished watching and was wondering the same thing:

Where did that late 60s Chevrolet Impala 4-door go to? He drove down there, to his aunts, to Bob's house, and back to the motel.

Somebody (the director) either was not paying attention or did it on purpose to screw with us.