I'm not an expert, but a few things... First there are "black boxes" in cars that now record speed, direction, etc... that are often used for insurance and court purposes. Second, accident investigators can tell a ton of information about vehicles based on the wreckage. I can only assume that a "defence" for idiot-fuck Muzzo would be something like the victims somehow "contributed" to the crash. Fuster-cluck Muzzo's vehicle could be analyzed to help determine whether or not the victims contributed in any way - so getting rid of the vehicle evidence may indeed help get turd-breath Muzzo off.Lets say the fire was set deliberately, what would be the point of that?? Muzzo already failed the blood alcohol test, so the proof he was drunk has already been established. I dont see how burning down a car would destroy any additional evidence
Keep in mind that the idiot is facing something like 16 charges (or more) in this, not just "drunk driving". Getting rid of evidence may help reduce a charge of murder to a conviction of manslaughter (which I hope doesn't happen).