P.G.
Explore the options you have for not taking her in the car. She sounds like a bright young lady. I assume you probably have to transport her to daycare or something like that -- but any other trip -- tell her if she unbuckles again, she can't be in the car for "x" amount of days, trips, times -- whatever can work for you. Check out some of the "Love and Logic" books or tapes. They are wonderful, and they work. It's all about choices and consequences. And it allows you to say "Yes, .... when: ...... Good luck.