Quoting KillerMombie:" Yep. When my son started doing it I asked Dr. Alisa Baer (Aka The Car Seat Lady) for advice. Her suggestion ... [snip!] ... of the scratchy side of Velcro on the parts where you unclip it. It's uncomfortable but in no way interferes with the function."
Well at home I put her on time out, and she responds well to that. But I can't exactly put her on time out in the car, and even though I have put her on time out for it when we got home, I'm not sure she really understood because that was like 30 min after she did it. So I'm just kind of stumped. But, I'm really hoping since she hasn't done it in a few days, she'll stop.