Comments from Submitter:
Inventory says 2 pieces of blue plate 2x4. In the instruction 3 are used.
Great catch!
There are indeed three used to build the crane-car model (model C). One is used
in Step 1, one is used in Step 5, and one is used in Step 7. They are highlighted
in the finished build below.
Thanks for contributing to the accuracy of the BrickLink inventories.