Murderous fiends

The part when the sister and her fiance run over Mercury, not once, not twice, but FOUR times and kill him. UGH! How did he not see him behind him!! And how did he not think he ran over someone or something!? And why didn't she say anything to him when she got back in the car???! I think that part along with the dad covering for them and getting Rome arrested (via Mr. and Mrs Loving 1967 was all completely disgusting! How can he even get arrested when they were both in the hotel room together which proved the car wasn't stolen and/or she wasn't kidnapped?! Anyway, I laughed throughout the movie, especially when the singing started.