[Denis]

Originally Posted by Number 3

Mules are other cars used to test chassis and powertrain. The red Gen 3 car would be a "mule".

Prototypes are representative of the actual vehicle on test.

Look at all the early comoed prototypes. None of the early one have the correct lamps in the early stages.

Remember the "these aren't the right headlamps" fiasco from the early Gen 5 spy shots?