Cars can achieve High Miles per Gallon of fuel or High Kilometer per Liter of fuel. Engineers are aware of it, the oil companies are very much aware about it and so with the car manufacturers, they are also very much aware about it. "Don't ask me why they are not implementing this very simple technology in cars." Instead, ask yourself when you start thinking and implement it yourself.
Mag sugod 'ta ug compile sa mga high mpg cars aron mahibalo ang mga tao nga nag exist ni nga mga cars ug mga pamaagi and it is very possible to get better km/liter sa imong car karon inig himoon lang gyud nimo ug masabtan nimo ang primary basic requirement - "vaporized fuel", this is considering nga gasoline or diesel ang imong fuel nga maoy gigamit sa majority sa cars karon.
Sad to inform you that your car today (old or new) is designed to deliver fuel in an inefficient manner - basa kaayo ang fuel nga maabot didto sa combustion chamber maong kalas ug prone to failure ang resulta, fuel is not completely vaporized.
High mileage car. 376 mpg!
YouTube - High mileage car. 376 mpg!
Of course, for those who will still insist di ni possible nga pamaagi - they will simply tell you it is not possible and it is not practical... and some will even tell you it's a fake. Just ignore them, they don't do any good for you. Get out of the box and start growing up.