Congrats, except I am confused. So it was not your car when you had a loan on it? "Now I can continue to drive the car, knowing it's all mine"
Even with a lein on the car, you could still install a car stereo, install rims, or even sell the car if you wanted to. I do not see how your control of the vehicle increased simply by paying off the loan, especially 11 months early. The interest that is being charged on your loan is not necessarily bad if you have the payoff amount sitting safely in a savings account earning the same amount. That being said, if your loan was for 8+%, I will proceed to stop talking, and tell you CONGRATS!!