Road trip with almost a 6 month old

Na

We are going on vacation at the end of February, and I was wondering how to make a 6 our road trip bearable for the baby and us.

Obviously we are going to stop every two hours or more often if needed, so we are anticipating being on the road for quite a while but I just can’t think about too many forms of entertainment for such a small baby. Any ideas? Have you gone on car trips with your little ones yet? What made the trip easier ?

Thank you !