The bickering over new CO2 emissions limits in Europe may finally be coming to an end. A draft directive could be released as soon as this week that includes a proposal that would allow car-makers to pool their emissions. With the goal of the whole process being to reduce the total fleet average emissions, companies that produce cars that emit more would be able to lump their vehicles in with those that have cleaner fleets. Porsche, whose very thirsty fleet obviously produces much more CO2 per vehicle, could team up with Volkswagen group whose fleet of smaller cars would offset that. Over time newer vehicles would still be required to reduce their emissions, but averaging the fleet helps get overall emissions down. It's not yet known what the penalties would be for missing the targets or what the threshold will be for getting classed as a low volume manufacturer to get an exemption.