At the end of the episode, Charlotte and Theo drive away in the SUV that Kendra had used throughout season 2, with the license plate 524 X 37. The remaining vehicle has the license plate D3X 407, but when Kendra drives up to the railroad crossing, she's not driving that car. You can see through the glare of her headlights the light/dark/light/dark/light pattern of the 534 X 37 plate if you pause it and look carefully.
Gubernatorial elections are held in November in election years. The crop fields are green and full of plants- they'd be bare after harvest in a Michigan November.