I can remember, when my daughter was younger, what a treasure it was to ride in the car alone. Now, I do like to have her with me (she is 11) and she is usually reading and I have to keep asking her questions. (Why did I encourage her to read?LOL)
However, I did develop a way to answer questions and converse with her and also drive or whatever I needed to do. I spent a lot of time with her, but sometimes, I had to pay attention to something else. I sometimes use this with my students at school because they want to tell me everthing and sometimes, I don't have time to listen.