Pearl of Bahoudin

The Pearl of Bahoudin is a large, jewel encrusted golden pearl which happens to contain a Cybertronion Weather Controlling Machine. Which probably makes it the most extravagant macguffin in the history of fiction.

Megatron arranged the Trans-Europe Express International Race, with the hopes of attracting Racing Legend Auggie Cahnay, whose custom built car was made of Symultech, the only metal which could contain the Pearls energies.

From Teletraan I: The Transformers Wiki, a Wikia wiki.