There are hybrids, and then there are high-performance hybrids. The Infiniti M35h is a high-performance hybrid. Where 350 horsepower and 32 mpg meet, it claimed a spot in the Guinness World Records this August, as the fastest accelerating hybrid available. But, that's old news, now. More recently, the Infiniti M35h carved out a prestigious fuel-economy class, all its own.

How did the high-performance hybrid manage such a feat? In a UK-based competition focused on…