Here is a idea that has been fueled for some time---hydro cars with the engine that runs on water. Pretty much old technology but more modern.
My only issue is this world will soon run out of water in say 50 or 75 years with it's current demand. This idea is completely clean, other than a possibility of noise pollution.
My thing about the automobile today as it sits is this:
Toyota has proven that a corolla can achieve 40 mpg. Yes this car is small but I'm 6'4" and 250 I can fit in this car easiely and I can move around fairly well. The engine is a 1.5 liter, or 1,500cc and it actually hauls ass and yet it can achieve good mileage.
My truck at 60 mph I think that is 110 kmh is running at about 1,700 rpm and if I'm lucky i can achieve about 19 mpg in town if I keep it below 60 mph.
I have drag in the area of clearance from the ground up, I have clean lines around my truck so why can't I get better mileage? this is my pondering question. When I bought my new truck in 02 I got rid of my 1979 that didn't used any computer help besides spark. now my new truck (5 years old) uses a computer for shifting the transmission, spark, fuel and air intake and exhaust. And it gets about 8 mpg more because of that technogy.
I don't know what your interest is, but say it was fishing, well you'd know the earth works off the tide and when the tide is out or coming in your fish will be the most active. or say it was cooking well you can't cook without sufficient heat, and too much will burn. So you tweek it until you find the desired results.
I know about Chery motors because of a paper I wrote about Malcolm Bricklin
http://www.cars101.com/subaru_bricklin.html http://www.canadiandriver.com/articles/bv/bricklin.htm
He was doing some things with Chery motors. He has some great ideas but the world has to be ready for them.