Do car rides go better when baby is sleepy or fresh from a nap?

I want to start taking my baby (4 months) on longer car rides so we can eventually work our way up to visiting her grandma who lives 1.5 hours away. As of now, we have mostly taken her on relatively short drives (<20 min). We usually take her when she is fresh from a nap so that when we get to our destination (usually the park or grocery store), she isn't cranky. For a longer ride, though, shouldn't we leave when she is sleepy so she can get a nice long nap in the car? What has been your experience? via /r/Parenting https://www.reddit.com/r/Parenting/comments/p9ahi0/do_car_rides_go_better_when_baby_is_sleepy_or/?utm_source=ifttt