Rehab July 19, 2014 12:52 PM Great idea and it works. What about duel fuel with gasoline and CNG? You can fill up at home to run on CNG plus go with regular gas when there's no place to fill up. Slowburn July 20, 2014 06:29 AM Just make sure you don't put gas in the diesel tank. The Skud July 21, 2014 12:56 AM Slowburn - IT WOULD NOT MATTER! IT ADJUSTS! That is the point ... If there is even a little diesel left, the fuel ratio computer can cope. Slowburn July 21, 2014 07:18 AM @ The Skud Not if it needs more diesel than is in the mix in the diesel tank. Mel Tisdale July 21, 2014 07:29 AM @ The SkudI suspect that it only adjusts pure diesel with pure gasoline. Once mixed it is like a bell. It cannot be unrung and the fuel cannot be unmixed. Slowburn is quite right, filling up at a gas station will be a nightmare. Surely the time has come for it to be impossible to put the wrong nozzle in the wrong filler pipe.Seeing as it does not need the injection pressure to be as high as a normal diesel engine, I wonder if a feature of the design is delayed induction valve closure, thus maintaining a 'low' compression ratio compared to that of the expansion ratio. Then, of course, we have a problem in determining what metric to use for the capacity of the engine: effective compression swept volume, expansion swept volume or combustion chamber volume. Chris Culpepper July 21, 2014 01:06 PM Once again, a joke by what once was the greatest car-producing country on the planet. Cars, then planes, then rockets, now look at us...Let's tinker around some more with fuel combustion engines and "Increasing mileage"...lolHyundai has a car running on water. And this is the best Saturn can do? Quit being bought and paid for by the oil companies and actually make a car worth a darn. Mirmillion July 21, 2014 01:58 PM Its brilliant and,as oil prices fall over the next 5 years, this will be both a good alternative to and a good range extender for battery powered cars and trucks. Insofar as cars running water (or any cracked water function, such as hydrogen) there is already a massive shortage of municipal and irrigation water - pretty soon it will cost more than gasoline. Economics and common sense (in terms of acceptable emissions coupled with existing infrastructure and jobs) will still play a big part in determining what products consumers will purchase. $125,000 USD for a Tesla that's no better than a fully loaded $32,000 Kia Optima is a hard pill to swallow unless your pocket book belongs to the 1% for whom its merely a third car. StWils July 21, 2014 02:36 PM I do not know enough to dispute the idea of mixing & managing fuels on the run. But I do know that such a complex system has enough sensors and controls to be a giant pain in the ass to fix as it ages. An idea that works great, or seems to, as a labtoy is not necessarily going to ever work out well as a product. Think of all the products, (not just cars), that have a great reputation and one of the key features will be simplicity. I would much rather read about developments such as new battery technologies that displace fossil fuels and do so elegantly. pmshah July 22, 2014 01:27 AM Who is going to manufacture the final version ? Is it going to be GM - a big no-no or Caterpillar ? None are suitable candidates for mass production. First for quality and the latter for volumes. Slowburn July 22, 2014 11:02 AM @ pmshah A lot of trucks are powered by Cat engines.