You are wise to realize that the transfer of the ownership to you so close to the filing of the bankruptcy may indeed be set aside as a fraudulent transfer.  You need to be pro-active in this bankruptcy filing.  From my understanding of what I have read, the Michigan exemptions for the bankruptcy may not be so beneficial in the end for you with the car.  There seems to be no specific exemption for vehicles under the Michigan Law but you have the option to use the Federal Exemptions and they have a vehicle exemption of up to $2,775.00.  You did not mention how much the car was worth but if his half would be within that range then you may be able to keep the car.  Get legal help here.  Good luck.