If they have the letter of authority, yes.
yes
You can trade it in and get money for then buy the new one but you will probably still not have enough money
without time money is useless. but without money, you can at least still trade!
yes you can but you still have to pay half or a quarter of the money
yes, even if you still owe money on your current car
Yes, you have to still pay 75$.
nowhere you have to trade with real persons
no you couldn't but if u do u are going to cough up some money too!
yes people still trade you may even still have grandparents that trade
A trade in a economy is what they trade for money.
To get money
It was profitable, and things were and are often still today very much centered around money.