To provide you sound legal advice to answer your question, a competent trial lawyer is going to need a lot of additional information including a thorough review of the facts of the crash, property damage coverage, medical payments coverage, amount of treatment bills to date, who paid the bills, amount outstanding, prior medical history, treatment history for injuries caused in this crash, final opinions from your treatment providers, what communications you've had with the adjuster, subrogation/...
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Michael's answer is spot on. If he damaged other property, he's responsible.
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I never want a potential client to hand over physical evidence to an adjuster. I can hear the response when you elect to pursue formal litigation, "where is the plastic substance that you claim was in the sandwich?" "We never received any evidence from you, etc." Seek out a competent attorney to represent you.
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