As Mia and Pearl are driving through the Ohio countryside on their way to Shaker Heights near the end of the episode, at minute 55:00 the landscape suddenly changes for a few seconds to a typical tree-lined "Allée" in north-eastern Germany, easily recognizable by the distinctive marker posts placed at intervals of 50m on German roads to indicate the edges of the pavement and help drivers judge their speed.
At 49:41, when Mia is leaving Ohio in 1981, she takes the exit for I-70 towards Hagerstown. The font used on the signs is Clearview, introduced in 2004, not the Highway Gothic font introduced in the 1940s.
No one would choose Rochester as a half way meeting point between Cleveland and NYC! State College, PA would have made more sense.
When Mia leaves her parents' home in Pittsburgh to drive to California, she takes an exit that says "west to Hagerstown." But Hagerstown is in Maryland and several hours east of Pittsburgh.