When Doc Fletcher is in the convertible Mercedes at the end , the ground is dry but when he catches up with Debbie Luckman its wet.
When Luckman (Tom Smothers) offers to buy the bank his hands alternate, between shots, from being in his pockets, to hanging loose by his sides.
All four men leave the blue car in the Iran desert and transfer to a white jeep. When the aerial shot pans out to see the jeep starting off, the blue car has disappeared.