It varies per state. In most states, yes.
yes
You pay the sales tax for the state in which you're going to register your car.
It depends on the state you live in. If your state has sales tax, you would pay them on the sales price.
Yes if you are registering the car in TN
You pay sales tax to the State in which the vehicle will be registered.
Yes, in many states, such as Minnesota, you have to pay sales tax on the delivery if you're paying sales tax on the item.
Yes, but you pay the sales tax to the state you register it in. Where you live. They will make you pay it when you get your license plates. You find more at http://CarBuyingHowTo.com
This will depend on the state that you live in and the regulations and laws of that state. Being related will not make a difference if the law in your state says individual sales are taxable then you will have to pay sales tax.
Typically sales tax is paid at the point of sale, hence the name. But depending on the state there are exceptions. If you buy goods from outside the state, and do not pay sales tax (internet sales!), you need to remit sales tax to your state. Most of the state income tax forms have a method provided for paying sales tax along with the state income tax.
Sales tax is usually collected on all sales within a state, regardless of where the purchaser lives. The primary exceptions are some sales made over the Internet and sales made to tax-exempt organizations.
You should ONLY pay the sales taxes etc. in the state where the vehicle is registered.