It is my belief that as a country we shall all be driving LNG (Liquefied Natural Gas), DI (direct injected), Turbocharged, Plasma ignited cars in the very near future. LNG because of the supply here in the US and the L part (rather than C-Compressed) for range and relative safety. DI because of the ability to turbocharge and stratify the charge in the cylinder. The ability to localize the injection of the fuel will allow cylinder walls to run cooler, more EGR flow and ultimately eliminate the throttle blade and the associated pumping losses. Turbocharging because of the "free" power provided by reclaiming a portion of the heat lost in the combustion process. And the BIG ONE! Imagine a Tesla coil hooked to a spark plug without a ground electrode that emits a high frequency, high voltage "spray" of ionizing energy that starts the combustion process no matter the air-fuel ratio present in the cylinder. No matter what the AFR or the amount of EGR, it would combust. The fuel volume could be controlled so closely that elimination of the throttle plate becomes possible. We are talking some SERIOUS efficiency increases here! OK, I'm new here so you're going to have to Google "ACIS" for the info I wanted to include. So, tell, me, what do you think?