Ferrari LaFerrari test mule headed to auction

A very early Ferrari LaFerrari test mule is headed to auction with RM Sotheby’s on May 14. Code-named M6, the test mule is based on a Ferrari 458 Italia that still looks largely stock on the outside. However, it features an early version of the LaFerrari’s hybrid powertrain, including a V-12 engine. This engine is an F140FB, though, rather than…