Yes
They absolutely will! But remember they won't pay off what you owe, they will simply add it to your new car loan.
Upside down is when you owe more than the vehicle is worth. e.g., if the car is worth $12,000, but you owe $13,000 you'd be $1000 upside down.
Yes but I don't recommend it. Salesman call it being upside down in the loan. They just tack the amount owed on the last car onto the new loan
Yes they will.
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