Kaiti Frickey gets off the flat bed part of the semi trailer truck that stopped at Post Falls Friday afternoon en route to Silverwood, carrying a much-traveled giant potato.  She is an ambasador for the Famous Idaho Potato Tour, sponsored by the Idaho Potato Commission, which is celebrating its 75th anniversary.  The vertical line on the end of the potato marks the spot where a door opens. That is where promoters keep their supplies for the trip.  The giant potato was parked in front of the Post Falls City Hall Friday afternoon when Duane Rasmussen took this photograph. The potato will be at Silverwood Saturday.