And in the dream Justin Bieber chokes is choking on a hose, but we're all on fire. Like seriously I need help with this what does this mean? I've lost sleep over this reoccurring nightmare.
It would not be bad if you could find the equipment. Some home alarm systems have a horn that makes noise when 12v are put to them. I would hook something like this in-line to your door lock wires. It would have to not overload or overdraw on that circuit, and the drawback would be the noise would always go off when you lock / unlock the door via the power option (even if you hit the lock button while driving) I'd check radio shack or some place like that for a 12v horn hey that's another idea put a relay in to toot the horn then the door locks are activated. Have fun!
You did the wrong thing. You should have called the police or gone into the school to report him in your car to the principal. Now it is your word against his. He might lie and say you invited him into your car. And either way you are responsible for anyone who gets into your car. Fair or not that is the law. You need to tell the police and your insurance company what happened (if they report this to the police and the police question you). Be honest about what happened. Most likely YOUR car insurance will be charged for the medical bills he incurred from you purposely causing an accident. You are lucky that you didnt kill him! If you had killed him by accident in a car accident you would be going to prison!