Revealing mistake: During the scenes when they are chasing the balloon in the prairie, the tire tracks from the camera car are easily visible.
manthabeat
26th Nov 2015
Little House on the Prairie (1974)
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Suggested correction: I just watched the episode and the tire tracks look to be the same shape as the tires from the wagons that are moving people around (such as the firefighters). It didn't look really thick like automobile tracks, so those seem proper to appear.