After all we all say things in anger that we don't really mean. Its human nature! Of course as Muslims we were advised in many places by the Prophet,Peace be upon him, to control our temper. And as mentioned by genesis it is illegal..however I do feel 7years is waaaaay harsh.. As for the motorist I guess the courts ruled it an accident based on evidences which we are not aware of so cannot comment. Guess the family of the victim may have agreed with the sentence too. I hope they were compensated.