In most cases none. All things being equal, it will be your word against the word of the repossession agent. Most repossession agents are very familiar with local judges and law enforcement. You defaulted on your loan note. It is likely the word of the repossession agent will carry more weight.
They do not have to notify you. You have no legal rights regarding car.
Yes. It is your personal property. It is taking up space on the property of the repossession agency. They may charge you for using that space.
When a vehicle is repossessed it is sold at a public auction for the fair market value (or as close to such as is possible). The borrower/debtor is responsible for any deficit in the amount between what the vehicle is sold for and the remaining balance of the loan contract plus additional fees such as cost of the repossession action. So, in that context, the person is responsible for the "full price" of the vehicle.
Yes
If the repossession occurred in a state that does not permit self-help repossession, report the car stolen; it cannot be legally repossessed. Louisiana and Wisconsin are two of these states. If you can show legal possession of the vehicle, and on time payment, report the car stolen. It cannot be legally repossessed in any state unless the debt is delinquent. If you do not wish to involve LEO's immediately, contact the private party who "repossessed" the vehicle and explain that if it is not returned within a reasonable amount of time, that you will report the vehicle stolen and give his name as the party responsible. There is no legal "personal reason" for repossessing a vehicle.
Yes, and many people do object to their vehicles being repossessed, before and after the repossession. Unfortunately, your objection will have little effect. If you are delinquent or in default on your loan, and the vehicle was used to secure the loan, the vehicle will be repossessed. There are few legal options available to you to avoid this aside from paying the loan current.
The question is a little confusing. If a vehicle has been repossessed then it would no longer be in the possession of the person(s) who made the purchase agreement or to whom the vehicle was registered. If what is meant is can a vehicle subject to repossession be taken out of the state to avoid such action, then the answer would be yes. But it is unlikely that would happen unless the lien holder decided to file it as a stolen vehicle. Which in some states would be perfectly legal and that would mean the person moving the vehicle to another state would encounter some serious legal problems.
Not without permission of the lender. A vehicle cannot be sold without a clear title of ownership. The lender is named on the title of a vehicle as the "lienholder" until the vehicle is paid for or otherwise released by the lienholder.
The vehicle will be sold. That amount will be applied to your balance. You will be responsible for the remainder owed along with any fees associated with the legal aspects etc
Likely you will have to pay the loan off after the lender sells the car. lenders have some legal options that will collect from you.
READ your contract you signed. Call a local attorney for state specific legal advice.
That would actually be called grand theft auto. See, the car does not belong to you. Once the vehicle is repossessed, the lender has taken possession of the property that secured the loan. Taking it back, outside of legal proceedures is theft, and would likely involve breaking and entering to get to it.