What should I do? Repo man intentionally tried to damaged vehicle for revenge against a 6th graders mouth(IK pathetic)

Over the past few months my family has had ALOT of hardship due to the health problems facing our single mother of six. Hours ago, her car was repossessed. Our only car currently; it gets me and my siblings to school every morning 20 minutes away(we don't have access to a bus.) Long story short, the rude repo man got fed up with my 11 year old brothers mouth while he was putting her AWD Honda Pilot on his truck. This man says to my brother "I'm going to make sure your mother doesn't get her car back" and my brother says "She will watch us." Then he goes "Not without tires you aren t." He proceeds to drag our car out of the driveway and into the street, AT LEAST 60 feet from where the car originally was. NOTE THAT THE CAR WAS IN PARK WHEN HE DID THIS! I have pictures of the black tire marks that it made in the driveway. NOT ONLY THIS, but when he originally reversed as fast as he could into our driveway to take the car, he almost hit my six year old sister! Right now, we're going to worry about borrowing what she owes to get it out. However, I'm very worried that our only vehicle may very well now have transmission damage. My mom has bad credit right now and really the only option we have right now is getting our car back, if the transmission has damage or anything else wrong(he threatened to do more to it) than we won't be able to pay for that kind of repair right now or any repair for that matter. What's the first thing I should do in the morning? I'm located in Michigan.

You should have handed over the keys to the car when he came to the door. It sounds like he was in a distressed situation.

First, if he really almost hit a six year old child, then report ONLY that to the police, without mentioning anything else to them. Nothing about the health problems, nothing about transmission damage. Just that reversed too fast and almost hit a child.

Next, tell the bank or lender that you think he damaged the vehicle on purpose. They usually wind up having to sell the repoed vehicles, and usually lose a lot of money on it. If the vehicle is damaged, they can't get as much money for it; if this particular repo man is damaging the cars a lot more than necessary, they might decide to stop using him.

You may be able to report the dangerous driving to the police, but that is it.
You will owe a lot more than the missed payments - you will also have to pay lots of interest, storage until you get it back, and the repossession fees.
He is not responsible for the transmission if there's any damage, nor is he responsible for the tires.

Use it as evidence to get justice.