When Jerry is driving through the fences in the field, the window trim is damaged and the side mirror is turned inwards. However in the last scene but one, the car loses all its battle damage and the mirror is again straight. Not only that, but the big "cowcatcher" also disappears and the sunroof which previously was closed, is now open. As Jerry comes to a halt at the church, everything is as it should be.
When Jerry reads Chrissy a bedtime story, it is supposed to be night time (in fact in the next scene, when Jerry goes outside, it is dark); however, bright sunlight can clearly be seen coming through the cracks around the window blind.
The goof item below may give away important plot points.
When Chrissy gets off the school bus at the gas station, the logging truck coming from the other direction toward the bus does not stop, as it would be required to by law whenever a school bus is dropping off passengers. This "error" could have been put in the film on purpose, since we see a similar (identical?) logging truck involved in the final accident at the end of the film.