Visible crew/equipment: You can see the camera in the backseat as they pull into the gas station.
Factual error: When Klaus and Ben visit Dave at the hardware store in November 1963, they arrive in a 1965 Imperial. (00:32:48)
We Only See Each Other at Weddings and Funerals - S1-E1
Trivia: The book of Vanya is signed by Gerard Way, creator of the original comic book series.