This is why my girl's are still 95% of the time still harnessed. We had a case of motion sickness, earlier last week, and I took Summer's seat out of my truck and put her HBB in. I have been really tired lately and we went back to Canada for a few days, so needless to say the cover is washed, and the seat is still sitting in the garage waiting to be put back together. Summer is now starting to ask to booster full time, and I am ok with this, but am thinking it will be easier with three across for her to be harnessed still, we are going to discuss this. I may end up selling the two seats I have for my truck, put the FR 85 from DH's truck that is Sum's into mine, for Leah to use and purchase her two booster seats for both trucks. To many decisions, and I am not certain which I would get her.