Your friend is in a lot of trouble. You need a lawyer to explain the ramifications of all of the issues involve. While I do not have all of the facts, it is highly unlikely that your friend will be eligible for pretrial intervention. This is a program designed to give first offenders of relatively minor offenses a second chance. Assault with a deadly weapon, which I am assuming was a car, is a serious crime. Leaving the scene of an accident carries several penalties which may not be totally obvious and which require far more explanation that a website can provide. Get your friend a lawyer.