RM Sotheby’s Monterey Car Week auctions are no stranger to ultra-rare automotive treasures, but this year, a particularly significant piece of Ferrari’s hybrid evolution is crossing the block. Slated for bidding on August 15, the 2011 Ferrari LaFerrari Prototype M4—also known internally as the “F150 Muletto M4”—offers collectors an extraordinary opportunity to own a tangible piece of Ferrari’s technical legacy. Expected to fetch between $900,000 and $1.2 million USD, this test mule isn’t just a car—it’s a historical artifact from the early development stages of the groundbreaking LaFerrari hypercar.

From 458 Roots to LaFerrari Legacy

At first glance, the Prototype M4 resembles a Frankensteinian evolution of the 458 Italia, and that’s by design. Built on a modified 458 chassis, the mu

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