If I create a new single-member LLC, can I place the same vehicle into service in the new entity and start taking depreciation on it?
No. It was fully depreciated in a prior sole proprietor business that you owned and closed without disposing of the vehicle in a fully taxable transaction. With a cost basis of ZERO in the new single member LLC, there is nothing to depreciate.
However, unless there is something I'm not aware of, you can still take the per-mile deduction for each business mile driven with the vehicle. You'll need to keep finely detailed mileage records to support your claim, should you ever be audited.
