I took some pics of two full-scale props at the Disney-MGM theme park during our summer vacation. The only way that you could see them was to ride the Backlot tour and it's what they call the graveyard of movie vehicles. There were also vehicles from Indiana Jones like the tank and the flying wing.
IIRC, the tour guide mentioned that these vehicles were the ACTUAL props used in the movies. Take a look and judge for yourself.
Disney Backlot Tour