かつて『走るラブホ』と呼ばれていた名車です

当時の若者はこの小さな城の中で寝食をして暮らし、より良い生活を夢見ていました

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This famous car was once called a "running love hotel".

Young people of the time lived and slept in this small castle and dreamed of a better life.

See Danbooru wiki etc. for the meaning of love hotel.