When Joy is "driving" after leaving the Amish bar, the gear selector can be seen in the park position.
Elka claims to be heading to Canada and her car breaks down in Amish country. Cleveland is in northeast Ohio and the bulk of Amish country is in the south and central Ohio. If Elka were heading to Canada, she would have needed to head either east and through Pennsylvania or west into Toledo and then into Michigan, neither would take her into Amish country in Ohio.