It seems to me that if you put two car seats in the middle row, then you have now access to the third row. And even if you put one car seat in the middle and one in the back, if you plan on taking any adults with you, one of them may have to climb in the back -- which is not easy. So has anyone put 2 car seats in the third row? Would toddlers like it back there? And what about the fact that there are no latch attachments, and no tether hooks either? Is that a major concern, and reason maybe for not putting any car seats in the third row?