No. They can repossess their collateral (the car which was repossessed), and they can send a collection agency to hound you for money, but they can't confiscate your property.
If the dealer calls you after the car has been repossessed, then you should inform them that you no longer have the car. They can contact the finance company to verify the information.
If you answer the phone when a debt collector calls, you can tell them not to call you back. That is part of Fair Debt Collection laws that were passed in a few years ago. They can still contact you through the mail, but wont
If you want them stopped, ask for the physical address in which to send a cease and desist letter regarding calls. They can still send letters and proceed to legal collection activity.
not if you still owe money on it
The SOL starts when you made the last payment.
Most likely not depending on what financial situation you're in.
Yes you are
yes. When a vehicle is repossessed by the bank it doesn't mean that you stop making payments. You are still liable for the loan.
If it is repossessed, you will owe the difference between the loan amount and what they sell the vehicle for.