Traveling with Harper added about 3 hours to our trip both ways. But that aside, I was so thankful ~ he was such a chill little guy! He fussed for maybe 45 minutes total, of the whole, there-and-back-40-hours-driving-time, road trip. There were times when Tom sat in back to play with him while he was trapped in his car seat. He babbled lots and played with his toys. Mostly he ate his hands and slept.