Help me out, what movie am I thinking of? (Seen on tv 10 years or so ago.)

Situation: a group of men, crashed in the desert. One man convinces the others he can build a plane to fly them all to safety. Which gets their hopes up, then down, as someone confronts him: "We didn't know you've only built toy planes?!"

To which he responds: "A toy plane is something you wind up and let ride on the ground!" (Meaning his miniature planes are not toys, because they actually fly.)