It's important to be honest about your wants and needs, otherwise, you'll have to pretend you feel right about something you don't. If you feel a strong desire for solitude, maybe carpooling isn't the best thing for you right now. See if you can bow out of your current commitment and take public transportation or bike to work instead.
Your birth chart is a map of the sky at the moment you were born. Download the Sun Signs app to find out how the planets’ positions influence your life.