I immediately thought of Hotblack Desiato's limo. "It's so ... black!" said Ford Prefect, "you can hardly make out its shape ... light just seems to fall into

I immediately thought of Hotblack Desiato's limo. "It's so ... black!" said Ford Prefect, "you can hardly make out its shape ... light just seems to fall into it!" Zaphod said nothing. He had simply fallen in love. The blackness of it was so extreme that it was almost impossible to tell how close you were standing to it.