Volkswagen has made a car it says can travel 313 miles on a gallon of diesel, and that emits just 24 grammes of carbon dioxide per kilometre travelled.
Source.
Saw this earlier as my girlfriend was checking the news. I'm not usually one to go mad over car manufacturers claims of hyper efficient cars, but this caught my attention. Although it's obviously not a mainstream idea yet, it seems that Volkswagen have concentrated on reducing weight through the use of comparatively exotic materials like carbon fibre.
I've always thought that it would be nice to see manufacturers take this approach to making cars more efficient - making them much lighter as well as using modern fuel efficient engines. But it seems materials like carbon fibre are still not common enough to make them practical for mass car manufacture of main components. Could this car change all that?