You describe a very frightening situation. You should report the incident to your insurance company immediately. The driver of the other vehicle could decide to make a claim against you for damages to his car and, if he claims to have been injured, you may face a civil lawsuit. Informing your insurance company now about this incident will satisfy your obligation under the policy to promptly notify your carrier of a potential claim.
Yes you can file vehicular assault. An "attempt" to harm is sufficient. You have a witness. Get a statement from that person and bring it with you when you sign complaints because the Court or the Court Administrator has to fine probable cause or the charges cannot be lodged. Take pictures of the damage both for the case and for the insurance claims. If parts of his bumper are on your side panel that will help since you don't hit a fist with your face. Also check the area to see if there are any banks or stores with cameras, even inside. They may have caught the attack.
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