I have a general Power of Attorney form; can I transfer cars from the person to myself?

I was at the CA DMV today and they said that I would need his signature to verify the odometer or something like that. I explained to him that I sign for him, since I have POA and he said that a POA isn’t valid for that odomoeter thing. My power of attorney Buy Cialis Online Without Prescription form is general but includes medical, financial, and about 20 other things that he initialed.