A white 1963 Cadillac convertible is seen parked at Patsy and Charlie's house on the day they are giving a graduation party to Patsy's sister. It was the day of Patsy's accident which was 14 June 1961.
When Charlie is riding his motorcycle under the bridge on his way home to see Patsy in Winchester, VA (but filmed in Martinsburg, WV), he is actually going in a direction that is "leaving" Martinsburg, WV, not entering it.
The movie shows the car her brother was driving being broadsided by a truck, when in fact it was a head-on collision with a car coming the other direction. Patsy was thrown through the windshield, not pulled from the wreck by her brother.