The Jaguar CX-75 is the stillborn competitor to the 918, TheFerrari and P1 and I think the most classy, and the most batshit due to it's screaming 1.6 turbo and supercharged inline 4 making 500hp and shrieking up to 10,200 rpm that coupled to 400hp worth of electric motors. Top speed is in excess of 220mph.
Jaguar had a specific set of design goals, The performance of a Veyron - 0-62mph in 3.0secs, 0-100mph in six. The pure-electric range of an Ampera/Volt - 40 miles. The official-cycle CO2 of a Prius - 89g/km.
Below are some videos from when the Journos drove the prototypes, hopefully you can see why it's one of my all-time favourite cars.