Purchasing a car in another state from a private party

[Ckrikos]

How do I go about purchasing a car in another state from a private party. I assume when they sign over their title to me, the ownership of the vehicle has passed. Should I get a lawyer to draft a purchase agreement where the seller upon signing forfeits any claim in the vehicle. This would only work if there is no bank lien, if there is I assume I need to pay the bank. What do I need to do with the dmv to drive it home? Insurance I have covered. I think I found a super clean 996 TT it just doesn't have many options.

Any and all help would be appreciated.