I love what they've done with the new LMP1 rules for endurance racing this year. The governing body basically said cars can use this much energy per lap and have up to two hybrid systems. Beyond that they left it to the teams to find the best solution for how to first finish and then finish first. No air restrictors, no displacement limits and any engine configuration they want. 

The result is three very different configurations from +Audi – Vorsprung durch Technik , +Porsche and Toyota. Toyota is the most recent team to release some details of their new car. A petrol-fueled, naturally aspirated V8 paired with a kinetic energy recovery system at each axle with a supercapacitor for storage.

Porsche is going with a turbocharged 2-liter four cylinder that is reportedly configured as a V4. A kinetic energy recovery system at the front axle and exhaust energy recovery at the rear store electricity in lithium ion battery. 

Finally Audi is sticking with an update of their two-time Le Mans winning turbodiesel V6 with an electric turbo and energy recovery system plus a kinetic energy recovery at the front. Audi is continuing with an electromechanical flywheel. 

We'll see who has the best solution starting at Sebring in March. ?