Re: It's a Garage 56 Car
I believe the car has it's own petrol motor charging the batteries, even Nissan has come out and said that it's impossible for a purely battery powered car to run at race pace for 24 minutes, let alone 24 hours. The engine only charges the batteries - it doesn't deliver power to the wheels.
The ZEOD is 100% electric in that it's propelled by 2 electric motors, producing ~200Kw. It also weights around 100kg less than the prototypes (meaning it will be around 1 tonne) and due to the unusual profile, which minimises frontal area, it should be vastly more aerodynamic than the other cars (which is the most important factor at an extremely high speed track like Circuit de la Sarthe, and for a 24 hr endurance race). Garage 56 entries are also required to agree to use the propulsion method 3-4 years down the track - in an official le mans car - it's not just a PR excercise, it requires investment. It is, nonetheless, designed to stretch boundaries rather than demonstrate an alternative that is immediately competitive with the other cars.
As for those saying it's irrelevant... it's more relevant than any other form of racing. The advances made to diesels at racing level allow developments to trickle down to road cars - things like high pressure direct injection, alloy blocks, these are things that require investment, and the investment comes from racing. Whilst KERS may not seem to bear any resemblance to any road cars, Ferrari have already said they're using KERS developed technology in their new flagship, and Mazda are (I believe) releasing a mechanical hybrid using a flywheel device in the near future.
If it was immediately obvious how racing technology could be applied to road cars, someone else would come along and do something more extreme. Racing is where the investment is, if racing rules can provide direction for new technologies, then there's no doubt that they can be used to benefit road cars down the track.