"It should be relevant fuels - biofuels, something relevant," he commented. "An E10 blend is going in the right direction. E10 is a fuel that is available on the market but like the diesel it's nothing extraordinary. It's a clean diesel. We've checked all the values. We made our own analysis on diesel fuel to know where we are, and it's relevant. That's where we're headed.
"There are different ways," Laudenbach added. "The IRL is using ethanol a hundred per cent this year and, because they're all the same cars, I think that fits well into that series. It's a spec series and that's a great way to go for them.
"But the ALMS has different cars and different concepts. Therefore, I think having different relevant fuels fits well into sports car racing. I think the ALMS may be the most important series to support the drive to new fuel types because you have all the different concepts."
Walliser pointed out that even Formula One is heading in an increasingly defined, spec-car direction.
"In
Formula One, they're talking about bringing everything to a standard," Walliser commented. "They're talking about standard ECUs, standard engines, standard brakes, standard gearboxes, wings, aero and tyres. Everything is, or will be, to a spec. Today, all other racing series are spec series and there are no possibilities for the engineers.
"In all these other series, we are talking about racing strategy and drivers. That's it. That's the situation in Formula One at the moment. If you spend enough money, you will win. It's not driven by technology. But sports car racing is driven by technology, especially the prototypes."
Walliser believes the ACO's controversial fuel tank equivalency formula is a good way to go and a road map to future rules equating different energy sources.
"I think the ACO made a really good step when they introduced the energy balance to the fuel cells," he said. "They started to think about the volume of fuel and dictating an amount of energy that can be refilled to the car.
