Six Pedals

&nbsp Six Pedals is a running joke throughout the series

Frst Appearance
Early in season one, when Caboose attemps to drive Shelia, he becomes confusd and aks "Wait . . . why are there six pedals when there are only four directions?

Subsequent Appearances

 * While Church is time traveling, he overhears himself telling Caboose why they can't remove pedals from Sheila
 * When Grif hijacks the Elephant, he says, "Wait . . . why are there only four pedals when there are six directions?"
 * In Episode 3 of Revalation, during the CGI sequence, six pedals can be seen in the Warthog.